Dry Bulk Cargo Trades
Dry Bulk Cargo Trades are the foundation of tramp shipping. They connect mines, farms, forests, industrial plants, steel mills, power stations, refineries, fertilizer producers, grain elevators, and consuming regions through a global system of bulk carriers, chartering contracts, port operations, cargo-handling equipment, and freight markets. For Shipbrokers, Ship Managers, Ship Agents, Shipowners, Charterers, and cargo traders, knowledge of dry bulk trades is not academic. It is a daily commercial requirement.A Shipbroker involved in dry cargo chartering must understand cargo origins, cargo destinations, ship sizes, port limitations, seasonal restrictions, canal options, load-line implications, cargo-handling speeds, cargo characteristics, and the trading pattern of each major commodity. Without this knowledge, a broker may misjudge freight, propose an unsuitable ship, overlook draft restrictions, underestimate port costs, or fail to protect the Principal in the Charterparty.
Dry bulk cargoes move in a market where geography and economics are inseparable. Iron ore flows from mining regions to steel-producing economies. Coal moves from export basins to power stations and steel plants. Grain moves from harvest surplus regions to food-deficit or feed-demand countries. Fertilizers move from chemical and mineral production zones to agricultural economies. Forest products, steel products, scrap, bauxite, sugar, tapioca, and many other cargoes each have their own routing logic, ship preference, cargo-handling method, and risk profile.
Shipbrokers, Ship Managers, and Ship Agents engaged in dry-cargo chartering should use reliable working tools. These include a Maritime Atlas and Maritime Distance Tables, a Load-line Map and International Navigating Limits (INL) Map, a Maritime Commodities Book, a Port Information Book, and regular Shipping Magazines and Shipping Newspapers. These tools help brokers calculate distance, estimate voyage duration, check seasonal load-line zones, identify canal alternatives, understand port restrictions, and follow fixture trends.
In modern chartering, digital tools have improved voyage estimation, but they do not replace professional judgment. A distance calculator may show the shortest route, but the broker must still consider canal dues, piracy areas, war risk zones, emissions exposure, bunker prices, draft restrictions, weather routing, waiting time, ice, monsoon, port congestion, and cargo readiness. A port database may provide maximum draft, but local agents may know whether that draft is realistic during neap tides, bad weather, congestion, or berth maintenance.
Dry Bulk Tramp Trades
Dry Bulk Tramp Trades are not operated according to fixed liner schedules. Ships are fixed cargo by cargo, voyage by voyage, or under time charter employment. Some trades are global and repetitive, such as iron ore from Brazil or Australia to China, coal from Indonesia or Australia to India and China, and grain from the US Gulf, East Coast South America, Black Sea, or Australia to importing regions. Other trades are regional, seasonal, or parcel-based.For practical chartering, two questions should be considered before almost any dry bulk fixture:
1- Cargoes for Ships
2- Type and Size of Ships
The first question concerns the commodity itself. What is the cargo? Is it heavy or light? Is it dusty, corrosive, wet, self-heating, dangerous, moisture-sensitive, liable to liquefaction, easily contaminated, or valuable? Does it require trimming, grabs, grabs of a particular size, shore cranes, pneumatic discharge, bagging, separation, dunnage, or special hold cleanliness?
The second question concerns the ship. Is the cargo suitable for a Capesize, Panamax, Ultramax, Supramax, Handymax, Handysize, MPP ship, Tweendecker, or Coaster Ship? Does the loading or discharging port have sufficient draft, beam, LOA, air draft, berth length, shore gear, storage capacity, and working hours? Can the ship pass the required canal, strait, river, lock, or seaway?
Shipbrokers should read dry bulk fixtures, market reports, index movements, commodity reports, and daily freight commentary. Market reports show where ships are open, which cargoes are being quoted, how tonnage lists are moving, and whether freight levels are rising or weakening. For example, a sudden increase in East Coast South America grain demand may tighten Panamax and Ultramax positions in the Atlantic. A slowdown in Chinese steel demand may reduce Capesize iron ore employment. A coal policy change in India or China may alter demand for Indonesia, Australia, or South Africa stems.
Cargoes for Ships
The largest dry bulk trades by volume are:1- Iron Ore
2- Coal
3- Grain
These three commodities dominate the employment of large bulk carriers and strongly influence dry bulk freight indices. However, the dry bulk market is much broader. It includes bauxite, alumina, fertilizers, sulphur, salt, cement, clinker, gypsum, petcoke, steel products, scrap, sugar, forest products, aggregates, minerals, and many agricultural products.
1- Iron Ore
Iron Ore is the largest major bulk cargo in seaborne dry cargo trade and one of the principal drivers of Capesize employment. Iron ore is the raw material from which steel is produced. Since steel is essential for construction, infrastructure, manufacturing, shipbuilding, machinery, vehicles, railways, and energy projects, the iron ore trade is closely linked to industrial activity and economic development.Iron ore is exported mainly by countries with large mineral reserves and developed mining infrastructure. Major exporters include Australia and Brazil, with important additional supplies from South Africa, Canada, Sweden, Norway, India, Mauritania, Liberia, and other regions depending on quality, freight economics, and market demand. China is the largest importer and the most influential demand centre. Japan, South Korea, Europe, and other industrial regions also import significant quantities.
Iron ore may be shipped as lump ore, fines, concentrates, pellets, sinter feed, or other processed forms. Raw, unrefined ores are often upgraded before shipment or before final use. Processing can produce Pig Iron, Sinter, Pellets, or Concentrates. This improves iron content, reduces waste, and may make transport more economical. Where processing is carried out in the exporting country, the exporting economy earns additional value and the importing industry may reduce processing cost.
Iron ore is dense and heavy. This makes stowage and structural loading important. A ship may reach maximum deadweight before filling all cubic capacity. Proper distribution among holds is essential to avoid excessive stress, trim problems, and structural strain. Modern ore terminals usually load at high speed through conveyor-fed shiploaders and spouts. The cargo may drop from considerable height into the holds. For this reason, loading sequences, ballast operations, trimming, draft checks, and stress monitoring must be handled carefully.
In chartering negotiations, the expression Spout Trimmed is often used. It means that the cargo is distributed by the loading spout so that no separate manual or mechanical trimming is required beyond what the loading equipment accomplishes. Modern bulk carriers are designed to receive high-speed cargo loading, but the Ship Master and terminal must still coordinate the loading plan. Large ships need efficient ballast systems to maintain safe trim, draft, and hull stress during rapid loading.
Draft surveys are common during iron ore loading. Because iron ore is heavy and large parcels may be loaded quickly, regular draft checks help confirm loaded quantity and prevent overloading. Charterparty clauses should allow practical time for draft surveys and final trimming, particularly where loading rates are high and the difference between full cargo and over-cargo may be small.
Discharge methods vary according to port equipment and inland transport. Iron ore may be discharged by grab cranes, continuous unloaders, bridge unloaders, conveyors, hoppers, wagon loaders, or other mechanised systems. At major terminals, very large parcels can be loaded or discharged within a few days. Rates around 50,000 tonnes per day or higher may be possible at advanced facilities, while smaller or less developed ports may work far more slowly.
Weighing methods also differ. Cargo may be weighed through belt scales, hoppers, shore systems, draft surveys, or other terminal measurement. The method should be understood before fixing, because quantity disputes may affect freight, deadfreight, bills of lading, and cargo settlement.
Major Iron Ore Exporting Countries and Ports:
Brazil: Tubarao, Ponta da Madeira, Ponta do Ubu, Sepetiba Bay
Australia: Dampier, Port Hedland, Cape Lambert, Port Walcott
South Africa: Saldanha Bay
Canada: Sept-ÃŽles, Port Cartier
India: New Mangalore, Mormugao, Paradip
Mauritania: Nouadhibou
Liberia: Buchanan, Monrovia
Norway: Narvik
Sweden: Luleå
The future of iron ore shipping depends on steel demand, Chinese industrial policy, infrastructure spending, mine investment, environmental restrictions, steel recycling, and the development of new ore reserves. Many regions contain large deposits, but reserves are not automatically tradeable. Mining cost, rail connections, port access, political stability, ore quality, and freight distance all determine whether a deposit becomes a seaborne export source.
2- Coal
Coal is a major dry bulk commodity with several types and grades. From a chartering perspective, the two most important categories are thermal coal and metallurgical coal. Thermal coal is used mainly as Fuel for electricity generation and industrial energy. Metallurgical coal, also known as Coking Coal, is used by the Steel industry to produce coke for blast furnaces. Coal trade therefore connects both power generation and steel production with dry bulk shipping demand.Major coal exporters include Australia, Indonesia, South Africa, Colombia, the United States of America (USA), Canada, Russia, and certain smaller or regional suppliers. China, India, Japan, South Korea, and several European countries are major importers, although trade flows change according to domestic production, energy policy, weather, electricity demand, steel output, price, sanctions, and environmental regulation.
The geography of coal trade is shaped by distance and quality. Asian importers commonly source from Australia, Indonesia, Russia’s Far East, South Africa, and occasionally North America. European buyers have historically sourced from the United States, Colombia, South Africa, Russia, and other Atlantic suppliers. Freight economics are important because coal is a lower-value bulk commodity compared with many manufactured goods. A small change in freight can alter the competitiveness of one origin against another.
The connection between Coking Coal, Iron Ore, and the Steel Industry is fundamental. When steel production rises, demand for both iron ore and metallurgical coal increases, supporting Capesize and Panamax employment. When steel demand weakens, both cargo streams can soften. However, dry bulk markets are rarely driven by one commodity alone. Weak steel-related demand may sometimes be partly offset by grain demand, fertilizer movement, bauxite, or other bulk cargoes.
Coal loading is usually performed by conveyor and chute systems, often supplied from rail wagons, stockyards, or blending facilities. Coal discharge is often carried out by shore grabs, ship’s cranes with grabs, hoppers, conveyors, or continuous unloaders. At developed coal terminals, cargo flow can be extremely efficient. At less developed discharge ports, geared bulk carriers may be preferred because shore cranes are inadequate or unavailable.
Coal presents several cargo risks. Some grades may self-heat, emit methane, absorb moisture, produce dust, or require careful ventilation control. The ship must follow the applicable cargo declaration and safe carriage requirements. Coal cargoes should be monitored for temperature, gas emission, and moisture where required. Hold cleanliness, cargo segregation, and trimming may be relevant depending on cargo type and Charterparty terms.
Petroleum Coke is commonly associated with the coal market in chartering practice, although it is not coal. Petroleum Coke is a by-product of oil refining and is exported from regions with major refineries, especially the United States Gulf, United States East Coast, United States West Coast, and other refining centres. Major importers include China, India, Japan, and European countries. Petroleum Coke may be granular, oily, dusty, fine, or abrasive depending on grade. Shipowners often treat it cautiously because it can stain holds, produce dust, and require special cleaning after discharge.
Petroleum Coke is valued as a source of carbon. One important use is the manufacture of electrodes for aluminium refining. Other grades are used as fuel or in industrial processes. From a shipping perspective, the exact grade and physical condition should be known before fixing.
Coal remains commercially important despite environmental pressure. Many countries are reducing coal use for climate and air-quality reasons, but coal continues to play a role in power generation, steelmaking, and industrial activity. Seaborne coal demand may fluctuate strongly as governments change import policy, domestic production levels, and energy transition targets.
3- Grain
Grain is a major dry bulk trade and one of the most geographically diverse commodities in shipping. In chartering practice, grain includes wheat, corn, barley, rye, oats, sorghum, rice, soybeans, and oilseeds. Although oilseeds are not always technically classified as grain, they are often treated within the grain trade because they move through similar logistics systems and are used for food, feed, oil extraction, and meal production.Major grain producers include China, India, the United States, Russia, Ukraine, Canada, Brazil, Argentina, France, and Australia. Major exporters include the United States of America (USA), Canada, Australia, Argentina, Brazil, France, Ukraine, and Russia. Major importers include China, Japan, North Africa, the Middle East, Southeast Asia, and parts of Europe, depending on harvest conditions and feed demand.
Grain shipping is influenced by harvest seasons, weather, crop yields, export policies, food security, animal feed demand, currency values, inland transport, storage availability, and port congestion. Grain can be politically sensitive because it is directly connected with food supply. Export restrictions, war, drought, floods, and crop failure can quickly change trade routes and freight demand.
The growth of meat consumption in developing economies has transformed grain logistics. As incomes rise, many consumers shift from basic grain diets toward meat, poultry, eggs, dairy, and processed food. This increases demand for feed grains such as corn, sorghum, barley, soybeans, soybean meal, oilcake, and other feed ingredients. Major exporters of feed grains and oilseed products include the United States, Argentina, Brazil, and other agricultural producers. Major importers include China, Japan, the EU countries, Taiwan, and other livestock-producing regions.
Developed grain-exporting countries usually have extensive inland collection systems. Country elevators collect local harvests and connect to rail, road, river barge, or inland waterway transport. Grain is moved to export elevators at seaports, where high-speed equipment loads bulk carriers. In North America, South America, Australia, Black Sea ports, and parts of Europe, modern grain terminals can load large parcels rapidly.
Port congestion in grain trades often arises not because the shiploader is too slow, but because inland supply, storage, documentation, quality control, fumigation, berth scheduling, or export policy creates bottlenecks. A grain elevator may be physically capable of loading 10,000 to 20,000 metric tons per day or more, but the ship may still wait because cargo is not accumulated, rail wagons are late, barges are delayed, inspections are pending, or port line-ups are congested.
Grain discharge methods vary widely. In highly developed import ports, static or travelling suction unloaders, pneumatic systems, conveyors, and silo connections may be used. In other ports, bucket elevators, portable discharge machines, clamshell grabs, deck hoppers, bagging machines, or road transport systems may be used. Some ports discharge grain directly into trucks or bags, especially where storage infrastructure is limited.
In developing or emergency-aid trades, grain may be carried in bags or bagged at the discharge port. Aid cargoes can involve limited port infrastructure, poor inland transport, weak storage, and urgent distribution requirements. Bagged grain may be the only practical method where bulk handling is impossible. Charterparty forms may require spare bags, needles, twine, or other bagging materials to be carried in case of split or damaged bags.
Grain requires careful hold preparation. Holds must be clean, dry, odour-free, free of infestation, and suitable for food or feed cargo. Previous cargo residues, rust scale, paint flakes, oil, chemicals, insects, or moisture can cause rejection or claims. Fumigation may be required before, during, or after loading. The Ship Master should ensure that fumigation requirements are safe for crew and compliant with port and flag requirements.
Usually, only one grade of grain is carried in one hold. If different grades or parcels are loaded in the same ship, separation must be planned carefully. Tarpaulins, plastic sheets, plywood, dunnage, or other separation materials may be used, but the Charterparty must allocate responsibility for cost, risk, and effectiveness. Mixing of separate grades can create serious commercial claims.
Currently, major grain loading ports are:
Argentina: Bahia Blanca, Rosario, Buenos Aires, upriver Parana ports
Brazil: Santos, Paranagua, Rio Grande, Itaqui, northern arc ports
United States of America (USA): US Gulf, Mississippi River, Portland (Oregon), Seattle, Houston, Baltimore, Norfolk
Canada: Vancouver, Prince Rupert, Thunder Bay, Montreal, Quebec, Baie-Comeau, Sorel
Australia: Fremantle, Kwinana, Esperance, Adelaide, Geelong, Portland, Bunbury
France: Rouen, La Pallice, Le Havre
Black Sea: Constanta, Ukrainian deep-sea and river ports where available, Russian export terminals
Agricultural Products
Important dry bulk Agricultural Products include Sugar and Tapioca, together with oilseed meals, oilcake, animal feed ingredients, and other semi-bulk products. These cargoes may be carried in bulk, bags, or parcels, depending on value, destination facilities, and cargo sensitivity.Sugar is carried as Raw Bulk Sugar or Refined Bulk Sugar. Raw bulk sugar is commonly cane sugar, although beet sugar may also move in some trades. Raw sugar is often loaded by conveyor and spout into the ship’s holds. Spreaders may be used to improve trim and stowage. Discharge is usually by grabs into hoppers, then through conveyors and weighing systems to refineries, storage, or onward transport.
Sugar requires care because it is sensitive to moisture, contamination, and heat. Holds must be clean and dry. Cargo residues from previous cargoes can cause rejection. Refined sugar is more sensitive than raw sugar and may require stricter cleanliness standards or packaging. Major raw sugar export areas include the Caribbean, North Coast South America (NCSA), Brazil, Thailand, Australia, South Africa, Mauritius, Reunion, Fiji, and the Philippines. Major importers include the UK, France, the United States, and refining regions elsewhere.
Tapioca is another agricultural product carried in dry bulk trades. Thailand has historically dominated the seaborne export market, even though other countries may produce significant quantities. Tapioca is used largely for animal feed and starch-related industries. It can be economically attractive to European and Asian feed compounders when it competes favourably against locally grown grains.
Tapioca shipments may use Panamax, Supramax, Ultramax, Handysize, or smaller ships depending on route, parcel size, port draft, and discharge facilities. Cargoes from Thailand to Europe may justify larger ships, while regional trades to Malaysia, Indonesia, and other Southeast Asian destinations may use smaller ships because of port limitations and parcel size.
Forest Products
Forest Products are an important group of dry cargoes, but they differ from heavy bulk commodities because many are sensitive, valuable, easily damaged, and sometimes shipped in parcel or liner-style trades. Forest products can be divided into Raw Forest Products and Processed Forest Products.1- Raw Forest Products include:
- Roundwood (Logs)
- Sawn Timber
- Pulpwood
- Woodchips
Softwoods (Softwood Trees) include firs, larches, pines, and similar species. They are widely used in construction, packaging, pulp, and industrial products. Softwood cargoes may be shipped as logs, sawn timber, pulpwood, or processed wood. Many softwood trades are supported by organised forestry, sawmills, rail systems, and export terminals.
Hardwoods (Hardwood Trees) are often more valuable and more difficult to source. They may be shipped as logs, sawn timber, or parcels. Conservation pressure, certification requirements, illegal logging concerns, and environmental restrictions have made hardwood trades more sensitive. Some hardwoods take many decades to mature and are part of forest ecosystems that cannot be replaced quickly.
The terms hardwood and softwood refer mainly to botanical classification, not always to actual hardness. Balsa wood is technically a hardwood despite being light and soft. Some softwoods are strong enough for heavy-duty applications. Shipbrokers should therefore avoid assuming cargo characteristics from the name alone.
Woodchips are produced from sawmill residue, pulpwood, plantation timber, or processed forest waste. They are used in paper, pulp, chipboard, linerboard, and other industries. Woodchip trades often require specialised ships or cargo systems because the cargo is light, voluminous, and can be dusty. Significant woodchip trades have existed from the West Coast of North America (WCNA), Australia, Chile, and other origins to Japan and other Asian markets.
2- Processed Forest Products include plywood, linerboard, pulp, paper rolls, newsprint, panels, and packaged wood products. These cargoes are often valuable and sensitive to moisture, crushing, staining, and handling damage. They are usually carried in specialised ships, MPP ships, or under long-term contracts with careful cargo care procedures.
Canada and Finland are major exporters of processed forest products, together with other North American, Scandinavian, Baltic, and European producers. Ice, winter, rain, and humidity are important operational risks. Ships carrying processed forest products are often ice-strengthened in northern trades and must maintain high standards of hold cleanliness, ventilation, dunnage, and cargo protection.
Linerboard is a processed forest product used in packaging and carton manufacturing. It is demanded by consumer goods, e-commerce, food distribution, manufacturing, and industrial packaging sectors. It is often moved under specialised shipping arrangements because cargo damage can be costly.
Fertilizers
Fertilizers are essential to modern agriculture and form an important group of dry bulk and bagged cargoes. The main nutrients required for plant growth are nitrogen, phosphate, and potash. These nutrients may be shipped as natural minerals, manufactured fertilizers, upgraded compounds, or chemical products.Nitrogen fertilizers include products such as urea, ammonium nitrate, sulphate of ammonia, and related compounds. Nitrogen is often manufactured through chemical processes linked to natural gas, oil refining, and industrial production. Urea is widely traded and is exported from regions with access to natural gas or petrochemical production, including the Arabian Gulf (AG), Russia, the Mediterranean, Southeast Asia, and other regions.
Sulphur is widely used in fertilizer production, especially in the manufacture of sulphuric acid, which is needed for phosphate upgrading. Sulphur may be carried in dry bulk condition or in specialised molten-sulphur ships. Major sulphur export sources include Canada, Poland, Germany, Arabian Gulf (AG) countries, and regions where sulphur is recovered from oil and gas production.
Phosphate is exported from several African coastal countries, including Morocco, Tunisia, Senegal, and Togo, as well as from Jordan, Egypt, the United States, Russia, and other origins. Phosphate rock may be upgraded into Di-Ammonium Phosphate (DAP), Triple-Super Phosphate (TSP), Mono-Ammonium Phosphate (MAP), and other higher-value fertilizer products.
Potash is another major fertilizer cargo. It can be exported from Canada, Jordan, Israel, Russia, Belarus, and other producing regions. Potash is often carried as potassium chloride or related products. It may be sensitive to moisture and may require clean, dry holds.
Other Fertilizer Compounds include Urea, Ammonium Phosphate, and Nitro Phosphatic Kompound (NPK). Fertilizer compounds may be shipped from major chemical and port centres such as Antwerp, Rotterdam, Hamburg, Poland, Romania, the Arabian Gulf (AG), Russia, North Africa, and Southeast Asia.
Many fertilizers are described in chartering as BHF (Bulk Harmless Fertilizers). This expression should not lead to carelessness. Harmless in this context usually means that the cargo is not treated as a dangerous cargo under normal conditions, but the ship must still consider compatibility, moisture, corrosion, caking, contamination, and hold protection. The IMDG (International Maritime Dangerous Goods) Code and IMSBC Code should be checked where applicable, especially if ammonium nitrate, oxidising cargoes, or mixed fertilizer parcels are involved.
Some fertilizers can damage paint coatings or corrode unprotected steel. Others may cake when wet or produce dust. Hold cleaning after fertilizers may be expensive, and residues can affect the next cargo. Charterparty clauses should address hold cleanliness standards, cargo compatibility, separation, bagged or bulk condition, and responsibility for cleaning after discharge.
Steels
Steels and steel products form a large and varied dry cargo group. They include rods, bars, beams, plates, coils, pipes, wire rods, billets, slabs, structural sections, and semi-finished products. Steel cargoes can be high value and damage-sensitive. They require careful stowage, dunnage, securing, tallying, rust prevention, and cargo condition recording.Steel Products are exported from industrialised countries and from developing economies with steelmaking capacity. Trade flows include exports from Europe, East Asia, the Black Sea, Turkey, India, China, Japan, South Korea, and other industrial regions to construction and manufacturing markets worldwide. Semi-processed products such as Pig Iron, concentrates, Direct-Reduced Iron (DRI), billets, and slabs may also move in bulk or semi-bulk trades.
Steel coils are particularly sensitive to rust, moisture, crushing, and deformation. Bills of lading and mate’s receipts often record pre-shipment condition, rust remarks, wetness, or handling marks. Shipowners must protect themselves by accurate clausing where cargo is not in apparent good order and condition. Cargo surveyors are commonly appointed for steel cargoes.
Scrap Metals are a major dry cargo connected with steel recycling. Scrap is exported from the United States, Europe, and other developed economies to steelmaking regions such as Turkey, India, Bangladesh, Pakistan, China, Japan, South Korea, and Taiwan. Turkey is a particularly important importer of European and Atlantic scrap. Scrap may be carried in bulk carriers, geared ships, or smaller ships depending on parcel size and port equipment.
Scrap cargo can damage holds, tank tops, ladders, frames, and coatings. Heavy melting scrap, shredded scrap, turnings, and mixed scrap each have different handling issues. Some scrap cargoes may contain sealed units, batteries, oils, or hazardous residues. Proper cargo declaration and safety checks are important.
Minerals
Dry bulk Minerals include bauxite, alumina, manganese ore, chromite, nickel ore, salt, gypsum, limestone, cement clinker, aggregates, ilmenite, rutile, and many other cargoes. Each mineral cargo has its own density, moisture behaviour, angle of repose, contamination risk, and regulatory requirements.Bauxite is the main raw material for the aluminium industry. It is exported in large quantities from Guinea (WAFR), Brazil, Australia, and other origins to alumina refineries and aluminium-related industries in China, Europe, the Middle East, North America, and elsewhere. Bauxite shipments have become increasingly important in the dry bulk market, especially in Atlantic-to-China trades.
Some mineral cargoes can liquefy if moisture content is too high. Nickel ore and certain mineral concentrates are well-known examples, but bauxite has also required closer attention in modern cargo safety practice. Shipbrokers and Shipowners should ensure that cargo declarations, moisture certificates, Transportable Moisture Limit where relevant, and loading conditions are properly reviewed.
Ships for Cargoes
Ships for Cargoes must be selected according to cargo volume, cargo density, port limitations, trade route, loading and discharging method, and market availability. Dry cargo ships are divided into several size and type categories. The choice of ship size strongly affects freight economics. Larger ships usually offer lower cost per tonne, but only if both loading and discharging ports can accommodate them and sufficient cargo is available.Capesize
Capesize: Capesize Bulk Carriers are large bulk carriers commonly around 100,000 to 200,000 DWT (Deadweight Tonnage), with some ore carriers and Newcastlemax types exceeding traditional Capesize dimensions. They are primarily employed in iron ore and coal trades on long-haul routes. They cannot pass the old Panama Canal locks and are often connected with routes around the Cape of Good Hope (COGH), although modern canal developments and ship types have changed some routing options.Capesize employment is concentrated on major loading regions such as Brazil, Australia, South Africa, West Africa, Canada, and the United States, with discharge mainly in China, Japan, South Korea, Europe, and other industrial regions. Capesize ships are highly exposed to iron ore demand and steel production. When major miners and steel mills are active, Capesize rates can rise sharply. When cargo volume weakens or port congestion eases, Capesize markets can fall quickly.
Some large combination carriers, including former OBOs and ore-oil structures, have historically moved between dry and wet trades when market conditions encouraged such switching. In modern practice, pure dry bulk carriers dominate, but the history of combination tonnage remains relevant to understanding past market volatility.
Panamax
Panamax: Panamax Bulk Carriers are traditionally around 65,000 to 85,000 DWT, although modern Kamsarmax designs are often slightly larger and more cargo-efficient. Panamax ships are versatile enough to carry coal, grain, iron ore, bauxite, fertilizers, minerals, and other bulk cargoes. They are widely used in both Atlantic and Pacific basins.The primary trades for Panamax Bulk Carriers are Coal, Iron Ore, and Grain. They also carry phosphate, tapioca, bauxite, alumina, petcoke, salt, and other bulk cargoes. Their market can be divided into the Atlantic Basin, Pacific/Indian Ocean Basin, Atlantic-to-Pacific/Indian employment, and Pacific/Indian-to-Atlantic employment.
Freight levels often reflect trade imbalances. Atlantic-to-Pacific voyages may pay higher returns when ships are needed in Asia, while backhaul cargoes from the Pacific/Indian Ocean to the Atlantic may pay lower returns depending on tonnage availability and cargo demand. Grain from the US Gulf, East Coast South America (ECSA), and Black Sea to China, Japan, and the Far East (FEAST) has historically been an important barometer for the dry bulk market.
Handy
Handy: Handysize and Handy-size Bulk Carriers cover a broad range of smaller and medium-sized dry cargo ships. Traditional small Handysize ships may be around 20,000 to 30,000 DWT, while larger Handymax, Supramax, and Ultramax ships may range from around 30,000 to more than 60,000 DWT. These ships are valued for flexibility, geared capability, and access to smaller ports.Handy-size Bulk Carriers often carry grains, fertilizers, steel products, scrap, forest products, sugar, cement, clinker, minerals, salt, agricultural products, and parcel cargoes. Geared Handysize, Supramax, and Ultramax ships are especially useful where shore equipment is limited. They can trade to ports that cannot accept Panamax or Capesize ships because of draft, berth length, air draft, storage, or cargo-handling limitations.
Large Handy-size ships may follow some Panamax trading patterns but add important cargo groups such as steels, scrap, forest products, bagged cargoes, project cargo, and minor bulks. Small Handy-size ships have even wider employment possibilities and may trade in regions with restricted dimensions, such as the Great Lakes, river ports, island trades, and smaller developing-country ports.
Bulk Cargo Parcelling
Bulk Cargo Parcelling is common in Handy-size and MPP trades. A ship may load several parcels from nearby ports or berths and discharge them at different destinations. This allows operators to combine cargoes that are too small for a full shipload. Parcelling requires careful planning of stowage, separation, rotation, bills of lading, cargo compatibility, and discharge sequence.Parcelling can improve earnings but increases complexity. Cargoes may have different Charterers, shippers, receivers, rates, laytime arrangements, and cargo care requirements. The ship must avoid contamination and ensure that one parcel does not block access to another parcel needed earlier in discharge rotation.
Tweendeckers
Tweendeckers: Traditional Tweendeckers were designed with intermediate decks that allowed different cargo parcels to be stowed separately. Many older Tweendeckers ranged between 12,000 and 18,000 DWT, while modern deep-sea multi-purpose ships may be around 20,000 DWT or larger. Modern MPP ships can often fold or remove tweendecks to compete with smaller bulk carriers.Tweendeckers and MPP ships are useful for liner-style parcel trades, bagged cargoes, steel products, forest products, project cargoes, machinery, vehicles, and mixed cargoes. Older Tweendeckers have historically been true tramp ships, searching worldwide for profitable cargoes such as bagged fertilizers, bagged grains, agricultural products, sugar, and minor bulk parcels.
Containerisation reduced many traditional liner breakbulk trades, but it did not eliminate the need for MPP ships. Heavy-lift, project cargo, steel parcels, forest products, aid cargoes, and port-restricted trades still create demand for flexible ships with gear and cargo segregation capability.
Short Sea Ships (Coaster Ships)
Short Sea Ships (Coaster Ships): Coaster Ships are generally smaller ships used in coastal, regional, river, or short-sea trades. Many are below 10,000 DWT, although the category varies by region. Modern Short Sea Ships are not confined to coasts. They may trade beyond their usual area when freight, cargo opportunity, weather, and regulations permit.Coaster Ships are useful for small parcels, restricted ports, island trades, river movements, short-haul bulk cargoes, construction materials, grains, fertilizers, steel, salt, aggregates, and agricultural products. Their advantage is access. They can call at ports too small or too shallow for larger ships and can give shippers more direct control over smaller commodity movements.
Ship Trading Restrictions
Commercial opportunity is only one part of dry bulk chartering. Shipbrokers must also consider restrictions that may prevent or complicate a voyage. These restrictions may be political, navigational, port-related, or labour-related.1- Political Restrictions
2- Navigational Restrictions
3- Port Restrictions
4- Labor Restrictions
1- Political Restrictions
Political Restrictions: Certain ports or countries may create future trading consequences, sanctions exposure, insurance problems, blacklist risk, crew risk, documentation requirements, or reputational concerns. Shipowners often list political exclusions in Time Charterparty forms. Shipbrokers must be extremely careful when fixing cargoes to or from politically sensitive countries.Political restrictions can arise from sanctions, war, diplomatic disputes, boycotts, embargoes, local customs requirements, flag restrictions, crew nationality issues, beneficial ownership concerns, or prior trading history. A ship that calls at one country may later face problems entering another country. A cargo document may require translation or special certification. A ship may be searched for links with a prohibited country, cargo, owner, or crew nationality.
Israel: Some trades have historically included boycott-related clauses because prior calls at Israeli ports could affect future trading in certain Arab countries. Charterparty clauses may require Shipowners to confirm that the ship is not blacklisted or boycotted as a result of previous Israeli calls.
Libya: Libyan port calls may involve translation, customs checks, documentation requirements, and inspection risks. Extra expenses may arise where documents must be translated into Arabic or where authorities impose fines for prohibited connections.
Cyprus: Political sensitivities involving the Turkish Republic of Northern Cyprus (TRNC), Greek-flag ships, Greek ports, and Turkish ports have historically affected voyage planning and ship acceptance. Shipbrokers must check current restrictions before fixing.
Cuba: Cuba-related restrictions have changed over time, but some Charterparty forms may still include older wording referring to Cuban trading. Shipbrokers should verify current legal and commercial consequences rather than rely on outdated standard text.
North Korea: North Korean trade remains highly sensitive because of sanctions, political risk, banking restrictions, insurance issues, and reputational exposure. Many Shipowners avoid such trades even where a theoretical cargo opportunity exists.
Iraq: Iraq has been affected by war, sanctions, reconstruction, political instability, and regional security concerns. Restrictions and requirements may change over time, so current verification is essential.
Political restrictions are not always written clearly in public rules. They may arise in practice through port authority attitudes, cargo receiver requirements, bank compliance procedures, insurance exclusions, Charterer policies, or crew welfare concerns. Shipbrokers should follow international news, sanctions updates, market circulars, and P&I Club guidance. A political event that appears distant from shipping may quickly affect freight, insurance, routing, cargo demand, or port access.
Shipbrokers should also use correct and respectful geographical names. If a country has renamed a city or port, commercial correspondence should normally use the accepted current name. Examples include Ho Chi Minh City instead of Saigon in formal modern usage, Swinoujscie instead of older Germanic forms, and careful regional naming where political sensitivities exist.
2- Navigational Restrictions
Navigational Restrictions: Climatic and geographical conditions can determine whether a voyage is possible, economical, or safe. Ice, monsoons, hurricanes, typhoons, cyclones, seasonal storms, river levels, draft restrictions, canal dimensions, load-line zones, and piracy or war-risk areas must all be considered.ICE can close or restrict trades. The Great Lakes and St Lawrence Seaway are seasonal. Northern Baltic ports may require ice-class ships during winter. Hudson Bay trades are possible only during limited months. Ice may affect not only navigation but also insurance premiums, speed, delays, and cargo availability.
MONSOONS, Hurricanes, and Typhoons affect ship routing, port safety, waiting time, cargo operations, and insurance. A cargo that appears profitable in a voyage estimate may become unattractive if seasonal weather creates heavy delays or risk.
Load-Line Zones are critical when calculating cargo intake. A ship’s permitted draft changes according to seasonal zones and water density. Shipbrokers must consider the route from loading to discharge, including whether the ship will pass through summer, winter, tropical, or seasonal load-line areas. Incorrect load-line assumptions can lead to overloading, reduced intake, or unsafe voyage planning.
Major Canals and Waterways affecting dry cargo navigation include:
- Panama Canal
- Suez Canal
- Cape of Good Hope (COGH)
- Bosphorous Strait
- Dardanelles Strait
- Gibraltar Strait
- St Lawrence Seaway (Great Lakes System)
- Magellan Straits (Cape Horn)
- Malacca, Lombok, and Sunda Straits
- Straits of Hormuz
- Red Sea and Gulf of Aqaba-Eilat
- Torres Straits and Great Barrier Reef
- Kiel Canal and Skaw
- Pentland Firth
- Dover Straits and English Channel
Where a ship may pass the Panama Canal or Suez Canal, the Charterparty should address canal compliance, fittings, tonnage measurement, dues, delay, and responsibility for additional costs. Canal tonnages may differ from ordinary GRT (Gross Register Tonnage), NRT (Net Register Tonnage), or modern GT/NT measurements. Transit tolls may depend on special canal measurement systems.
3- Port Restrictions
Port Restrictions: Port restrictions may be physical, operational, legal, financial, or seasonal. Shipbrokers should check port information carefully before fixing a voyage. Hidden restrictions can destroy the economics of a fixture.Physical restrictions include draft, beam, LOA, air draft, berth length, turning basin, channel depth, tidal window, bar conditions, swell exposure, lock dimensions, crane outreach, hopper capacity, storage, and conveyor limitations. Operational restrictions include working hours, holidays, berth priority, cargo availability, pilotage hours, tug availability, weather stoppages, and local rules.
Safi (Morocco) may be affected by a harbour bar and Atlantic swell conditions that restrict entry for certain drafts.
Douala (Cameroon) is a neap port where tidal levels can affect berthing and sailing windows, sometimes causing ships to wait for sufficient water.
Genoa (Italy) has air-draft considerations due to aircraft movements connected with the airport.
Butterworth (Malaysia) may give berth priority to gas tankers, which can interrupt or delay dry cargo operations.
West Coast South America (WCSA) ports may be affected by swell, ranging, and surge, increasing risk of berth damage, mooring problems, and cargo delay.
Port Costs vary substantially between countries and even between ports within the same country. Some ports subsidise costs to attract traffic, while others require high charges to support infrastructure. Pilotage, towage, light dues, berth dues, harbour dues, agency fees, waste disposal, security fees, and customs costs must all be considered in voyage estimates.
Freight Taxes: Freight taxes can materially affect net voyage returns. Some countries impose taxes on freight earned from cargoes loaded or discharged in their jurisdiction. These taxes may be imposed according to the ship’s flag, the recipient of freight, the Shipowner, the Disponent Shipowner, or the country of incorporation. Bilateral agreements may reduce or eliminate freight tax for approved countries. Shipbrokers should check with local port agents before fixing.
A voyage estimate that ignores freight tax, port dues, canal dues, or local charges may produce a misleading profit result. The broker should always ask local agents for current cost guidance where the port is unfamiliar or expensive.
4- Labor Restrictions
Labor Restrictions: Labour issues can affect whether a ship is acceptable in a port, how fast cargo operations proceed, and what costs are incurred. Labour restrictions may arise from stevedore unions, national seafarer organisations, port workers, safety rules, working hours, holiday arrangements, or international labour bodies.Australasia and Scandinavia have historically been associated with strong labour organisations and close attention to seafarer welfare. The ITF (International Transport Workers’ Federation) has played a significant role in seeking minimum wage and working-condition standards for seafarers, especially on ships flying so-called Flags of Convenience (FOG) such as Panama, Marshall Islands, Liberia, and others.
Local unions may support ITF action and may delay ships until wage, crew, or certificate issues are addressed. Shipowners trading to labour-sensitive regions should ensure that crew documents, wage records, agreements, and welfare standards are in order. A small compliance problem can become an expensive port delay.
Hold access can also be a labour issue. Some unions require Hold-Ladders to comply with specific dimensions and resting platform requirements. If cargo hold entry is needed for cleaning, trimming, inspection, or cargo operations, non-compliant ladders may cause refusal of labour. Cargo hold cleaning may also be required ashore at high cost if local unions insist on it. Such expenses and delays should be considered before fixing to ports with strict labour practices.
Time in Ship Chartering
Time in Ship Chartering affects offers, replies, delivery, redelivery, laytime, cancelling dates, voyage estimates, demurrage, despatch, hire calculations, ETA reporting, and fixture negotiations. Shipbrokers must be accurate when referring to time because an unclear reply time, wrong time zone, or misunderstood delivery time can create commercial disputes.World time is based on longitudes measured from the Greenwich Meridian. The earth is divided into 360 degrees of longitude. Since a day has 24 hours, each 15 degrees of longitude represents approximately one hour of time difference. Moving eastward from Greenwich, time advances. Moving westward, time is lost.
One (1) Hour for every 15 degrees of Longitude is the basic principle. A complete 360-degree circuit equals 24 hours. The halfway point is the International Date Line (IDL), located broadly around the 180-degree meridian in the Pacific Ocean, although it deviates to avoid dividing certain island groups and territories.
A ship sailing eastward from Asia to the United States may gain a calendar day when crossing the International Date Line (IDL). A ship sailing westward may lose a day. This is important when calculating ETA, cancelling dates, laycan, delivery notices, redelivery notices, and Pacific voyage duration.
During negotiations, Shipbrokers should state the time zone clearly. A firm offer reading “reply 1100 hours†is incomplete. Reply 1100 Hours Singapore Time, “reply 1100 hours London time,†or “reply 1100 hours Istanbul time†removes ambiguity. In international chartering, a party may be asleep or outside office hours when another party expects an immediate answer. Good brokers consider time zones before setting reply deadlines.
Time in Ship Delivery and Redelivery
Time in ship delivery and redelivery can be calculated in different ways:1- Local Time
2- Elapsed Time (Stop-Watch Time)
3- Greenwich Mean Time (GMT)
These methods can produce different hire results where delivery and redelivery occur in different time zones. A ship delivered in London and redelivered in Mumbai may show a different local-clock duration than the actual elapsed duration. If the Charterparty uses local time at both ends, one party may gain or lose several hours of hire simply because of time zone difference.
Elapsed Time, also called Stop-Watch Time, measures the actual time that passes between delivery and redelivery, less any off-hire periods. The concept is simple: start a stop-watch at delivery and stop it at redelivery. The total running period is the legal hire period unless the parties have expressly agreed another method.
Greenwich Mean Time (GMT) may also be used as a common standard. If both delivery and redelivery are converted to GMT, time zone distortion is removed. The Charterparty should state clearly whether local time, GMT, UTC, or elapsed time applies. If the contract is silent, the answer may depend on the governing law and arbitration practice.
Under English Law, Elapsed Time (Stop-Watch Time) is generally the fair and logical method unless the parties agree otherwise. Under other systems, local time may be applied where the Charterparty is silent. Shipbrokers should avoid uncertainty by inserting clear wording.
Salinity Calculations
Salinity Calculations help determine how deeply a ship will float in water of different density. A ship floats higher in dense salt water and deeper in fresh water. Brackish water falls between the two. This affects cargo intake, draft compliance, canal transits, river ports, and loading decisions.The three common water types are:
1- Salt Water (SW)
2- Fresh Water (FW)
3- Brackish Water (BW)
A ship’s Fresh Water Allowance (FWA) is usually shown on the ship’s Capacity Plan. It indicates how much deeper the ship will sink when moving from salt water to fresh water at the same displacement. The density of the port water may be obtained from port information, local agents, pilots, or terminal data.
The Panama Canal is a Fresh Water (FW) Canal, so draft must be considered accordingly. River ports may have fresh or brackish water. Tidal estuaries may change density depending on season, rainfall, river flow, and tide.
Salinity Calculations Example
A ship’s Fresh Water Allowance (FWA) is 300 mm and the Brackish Water (BW) density is 1015 kg/m3.
The formula is:
Increased Draft = FWA x (Density of Sea Water - Density of Brackish Water) / (Density of Sea Water - Density of Fresh Water)
Increased Draft = 300 mm x (1025 - 1015) / (1025 - 1000)
Increased Draft = 300 mm x 10 / 25
Increased Draft = 120 mm
This means that, compared with salt water, the ship will sink approximately 120 mm deeper in the stated brackish water. If the ship is loading close to her maximum permitted draft, this difference may decide whether more cargo can be loaded or whether cargo intake must be reduced.
Conclusion
Dry Bulk Cargo Trades require a combination of commodity knowledge, port awareness, ship-size understanding, and commercial judgment. Iron ore, coal, and grain dominate the major bulk trades, but many other cargoes provide essential employment for Panamax, Supramax, Ultramax, Handysize, Tweendecker, MPP, and Coaster Ships. Each cargo has its own loading method, discharge method, cargo risk, trade route, and ship preference.A successful Shipbroker must understand not only freight levels but also the physical and operational realities behind a fixture. Port restrictions, labour rules, political exclusions, canal measurements, load-line zones, seasonal weather, time-zone differences, cargo density, water salinity, and cargo-handling rates can all change the outcome of a voyage. The best dry bulk broker is therefore not merely a messenger between Shipowner and Charterer. The best dry bulk broker is a commercial analyst who understands ships, cargoes, ports, routes, time, costs, and risk.
Dry bulk shipping remains one of the clearest reflections of global trade. When steel mills expand, iron ore and coking coal ships move. When power demand rises, thermal coal and petcoke cargoes increase. When harvests are strong or food demand changes, grain and feed cargoes move across oceans. When agriculture develops, fertilizers move. When construction grows, steel, cement, clinker, aggregates, and forest products follow. For that reason, dry bulk cargo trades will remain central to ship chartering and world commerce.