Charterparty Fixing on Subjects: Subject Stem, Subject Details, and Lifting Subjects

Charterparty subjects are conditions attached to a negotiated charterparty before the agreement becomes fully binding. In practical ship chartering, parties may agree the main commercial terms, such as ship description, cargo, freight or hire, loading port, discharge port, laycan, demurrage rate, commission, and charterparty form, but still leave the fixture conditional upon one or more approvals or confirmations.

When a ship is described as being fixed on subjects, the parties have usually reached a provisional agreement on the essential commercial basis of the deal, but the fixture is not yet final because one or more stated conditions remain open. Until those subjects are lifted, the fixture may not have the same legal effect as a clean, unconditional agreement. The legal position depends heavily on the wording used, the governing law, the stage of negotiations, and the conduct of the parties.

In day-to-day shipbroking language, subjects are sometimes treated casually. This can be dangerous. A short phrase such as subject stem, subject details, subject receivers’ approval, or subject board approval can determine whether the parties are legally bound or whether either side can still walk away from the negotiation. For that reason, subjects should be drafted precisely, limited in scope, and tied to a clear deadline.

Meaning of Subjects in Charterparty Negotiations

A subject is a condition, proviso, or qualification attached to an apparent acceptance of a charterparty offer. In commercial terms, it means that the parties have not yet reached a fully unconditional fixture. The subject must normally be satisfied, waived, or lifted before the charter becomes firm.

For example, if Charterers accept Owners’ firm offer subject stem, Charterers are saying that they agree the main terms only if sufficient cargo is confirmed for the agreed loading dates. If Charterers accept subject receivers’ approval, the deal depends on the cargo receivers approving the ship. If the fixture is subject details, the parties may still need to agree the detailed charterparty clauses before the fixture becomes firm, particularly under English law.

The commercial purpose of subjects is understandable. Charterers may need cargo approval, shippers’ confirmation, receivers’ clearance, board approval, credit approval, or operational confirmation from terminals. Shipowners may need to check the Charterers’ reputation, financial standing, cargo suitability, port restrictions, or trading limits. However, the same mechanism can also be abused if subjects are used to hold a ship while one party searches for a better alternative.

Common Charterparty Subjects

Although almost any condition can be created by agreement, the most common subjects in ship chartering include the following:

Subject to Shipowners’ Approval of the Charterers: Owners reserve the right to check the commercial standing, reputation, creditworthiness, sanctions position, and performance history of the Charterers before committing the ship.
Subject to Charterers’ Approval of the Shipowners: Charterers reserve the right to approve Owners, often because cargo interests, financiers, receivers, or traders require a satisfactory counterparty.
Subject to Shippers’ or Receivers’ Approval: The cargo shippers or receivers must approve the ship, Owners, ship age, gear, hold condition, class, flag, P&I Club, or other operational features.
Subject to Board Approval: The proposed fixture requires approval by a board of directors, management committee, parent company, finance department, or other internal authority.
Subject To Enough Merchandise (STEM): The fixture depends on sufficient cargo being available for the agreed laycan and loading programme.
Subject Details: The parties have agreed main terms but still need to agree the detailed charterparty clauses.
Subject Open: The ship must remain open and available at the moment the subject is lifted or the fixture is confirmed.
Subject Inspection: The fixture depends on a satisfactory inspection of the ship, cargo holds, tanks, class records, certificates, or cargo gear.
Subject Finance or Credit Approval: The party imposing the subject must obtain internal finance approval, bank approval, insurance approval, or credit committee approval.

Why Subjects Must Be Used Carefully

Subjects should not be added unnecessarily to the main terms. Too many subjects can weaken the fixture, slow down negotiations, create uncertainty, and give one party an opportunity to escape if the market changes. A fixture that is overloaded with conditions may appear commercially agreed but may remain legally fragile.

In a rising freight market, Shipowners usually dislike open subjects because the ship may be held away from other opportunities while Charterers decide whether to proceed. In a falling freight market, Charterers may use subjects to delay commitment while looking for a cheaper ship. In both situations, the party waiting for subjects to be lifted carries a commercial risk.

Shipbrokers should therefore record subjects accurately and should never assume that a subject is harmless. Each subject should state what must be approved, who must approve it, by what time it must be lifted, and what happens if it is not lifted. Ambiguous subjects create disputes because parties may later disagree about whether the condition was satisfied, waived, or still outstanding.

Fixing on Subjects Under English Law

Under English law, a charterparty fixture is generally not concluded until all outstanding subjects that prevent contractual commitment have been lifted. Therefore, if the recap says fixed subject details, subject stem, or subject board approval, the wording may prevent a binding fixture from arising until the relevant subject is removed.

This English law approach reflects the principle that a conditional acceptance is not the same as an unconditional acceptance. If the acceptance depends on a future event or further approval, the parties have not yet reached a final agreement. In practical terms, this means a ship may be described commercially as “on subjects,” but legally there may be no binding charterparty until subjects are lifted.

The phrase subject details is particularly important. In London practice, fixing on main terms subject details usually means that the ship is not fully fixed until all charterparty clauses and details are agreed. The main terms may provide the commercial framework, but the fixture remains incomplete if the parties have expressly made the agreement subject to the later settlement of details.

Fixed Subject Details: London and New York Practice

One of the most important differences in charterparty negotiations is the contrast between London and New York treatment of subject details. In London and under English law, subject details generally means that no binding fixture exists until the details are agreed and the subject is lifted.

In New York and under United States practice, the position can be different. If the parties agree the main terms and only details remain, a tribunal or court may find that a binding fixture has already been concluded and that unresolved details can be determined later. This can surprise parties accustomed to English practice, because a negotiation that would not yet be binding in London may be treated as binding in New York.

This difference makes the governing law and arbitration clause extremely important. If the fixture recap points to New York arbitration or United States law, parties should not assume that subject details will have the same effect as under English law. Shipowners, Charterers, and shipbrokers should clarify at the recap stage whether subjects are intended to prevent any contract from arising or whether they are only procedural conditions to be resolved after agreement on main terms.

Subject Stem in Ship Chartering

Subject To Enough Merchandise (STEM) means that the fixture depends on sufficient cargo being available. This subject is usually imposed by Charterers who need to confirm with suppliers, shippers, receivers, mines, terminals, or traders that the cargo will be ready during the agreed laycan.

Subject stem has a legitimate commercial function. A Charterer may be unable to secure cargo confirmation until a firm ship is available. Grain, coal, ore, fertilizer, steel, scrap, salt, bauxite, and other bulk cargoes may depend on production schedules, storage capacity, stockpile readiness, terminal nominations, export permits, or sale contract timing.

However, subject stem can also be misused. In a weak market, Charterers may hold a ship on subjects while checking whether another ship can be obtained at a lower freight rate. Shipowners should therefore insist on a short and clear deadline for lifting subject stem. If the subject is not lifted by that deadline, Owners should be free to trade the ship elsewhere.

Subject Shippers’ or Receivers’ Approval

Subject shippers’ approval or subject receivers’ approval is used where cargo interests must approve the nominated ship before the charter becomes firm. This subject often appears in trades where receivers, shippers, or terminals have strict requirements for ship age, hold condition, flag, class, cranes, grabs, Safe Working Load (SWL), hatch dimensions, draft, beam, air draft, or port compatibility.

For example, a receiver may require a geared ship with a minimum crane capacity, Australian hold ladders, Great Lakes fittings, grain fittings, or a particular hold arrangement. Some receivers may reject older ships, ships with timber ceilings, ships with unsuitable cargo gear, or ships that do not satisfy terminal safety rules.

Many disputes can be avoided if Owners provide a full and accurate ship description at the offer stage. If a feature is essential to the trade, it should not be left for later discussion. It should be included in the main terms or recap so that Charterers, shippers, and receivers can approve the ship quickly and objectively.

Subject Board Approval and Internal Approval

Subject board approval means that the proposed fixture requires approval by a board of directors or senior management body. This subject is common where a large commitment is involved, where the Charterer is a public company, where the cargo is linked to a long-term sale contract, or where internal risk procedures require formal approval.

Similar subjects may include credit approval, management approval, head office approval, finance approval, or parent company approval. These subjects should be used honestly and narrowly. If the approving authority is already aware of the deal and approval is routine, the subject should be lifted quickly. If approval may genuinely be uncertain, the other party should understand that risk before holding the ship or cargo.

Subject Open or Subject Free

Subject open means that the ship must still be available when the subject is lifted. A ship may be negotiating with more than one party, but good chartering practice normally requires honesty about whether a ship is firm, open, or already under negotiation elsewhere.

A related phrase is subject free or subject unfixed, which can be used to indicate that acceptance depends on the ship or cargo not being fixed elsewhere before acceptance is received. This is commercially important because ships and cargoes can move quickly in active markets.

What Does “On Subs” Mean?

On subs is the practical shorthand for “on subjects.” It means the parties have provisionally agreed the fixture, but one or more subjects remain outstanding. A ship “on subs” is not the same as a ship fully fixed. Until the subjects are lifted, the fixture may remain conditional and may not be legally binding, depending on the governing law and wording.

When brokers report a ship as being on subs, the report should be treated carefully. It may indicate that the ship is no longer freely open in the market, but it does not always mean that the final charterparty has been concluded. The market should not confuse a provisional subject fixture with a clean firm fixture.

Lifting Charterparty Subjects

Lifting subjects means removing or satisfying the outstanding conditions. Once all subjects are lifted, the fixture becomes firm, subject to the applicable governing law and the wording of the recap. The lifting of subjects should be communicated clearly, preferably in writing, and should identify exactly which subjects have been lifted.

For example, a broker may write: “Charterers lift subject stem and receivers’ approval. Ship now fully fixed as per recap.” This type of wording helps avoid later arguments about whether the fixture became binding. If only one subject is lifted but others remain open, the message should say so clearly.

Subjects may also be waived. A party may decide to proceed even though the condition has not been formally satisfied. Waiver should also be recorded clearly, because silence or unclear conduct may create disputes. In some cases, if a party behaves as though the fixture is firm despite an outstanding subject, the other party may argue that the subject was waived.

Deadlines for Lifting Subjects

Every subject should have a deadline. Without a deadline, one party may hold the ship or cargo for too long, creating market exposure for the other side. A subject deadline should state both the date and time, and it should identify the relevant time zone, for example “subjects to be lifted latest 1700 hours London time on 12 June 2026.”

If the subject is not lifted by the deadline, the parties should know whether the fixture automatically fails or whether an extension must be expressly agreed. Clear wording prevents later disputes over whether silence amounted to an extension or whether the ship was free to fix elsewhere.

Abuse of Subjects in Chartering Negotiations

Subjects can be abused when they are used not for genuine approval or confirmation but as a commercial option. Examples include holding several ships on subjects at the same time, using subject stem as a way to monitor the freight market, using receivers’ approval as an excuse after finding a cheaper ship, or failing subjects for reasons unrelated to the stated condition.

Such conduct can damage trust in the market. Chartering depends heavily on speed, reputation, and professional ethics. If parties misuse subjects, other market participants may become reluctant to negotiate with them or may demand shorter deadlines, stricter wording, or financial guarantees.

Good shipbroking practice requires brokers to keep principals fully advised of the exact status of subjects. Brokers should not describe a fixture as fully fixed if subjects remain open. They should not encourage principals to use subjects as hidden options. They should also maintain accurate written records of offers, counteroffers, acceptances, subject deadlines, extensions, and lifting messages.

Main Terms and Details in Charterparty Negotiations

The distinction between main terms and details is central to fixing on subjects. Main terms usually include the identity and description of the ship, cargo quantity and description, loading and discharging ports or ranges, laycan, freight or hire, demurrage, commissions, loading and discharging rates, charterparty form, and governing law or arbitration terms.

Details usually refer to the fuller charterparty clauses that expand the agreed main terms. These may include clauses on bills of lading, cargo claims, strikes, war risks, ice, sanctions, ISPS, bunkers, hold cleanliness, cargo gear, agents, taxes, dues, liens, deviation, exceptions, laytime wording, notice of readiness, and other operational or legal provisions.

Leaving too many details unresolved can be risky. A clause that looks like a “detail” may have major commercial consequences. For example, a difference in laytime exceptions, weather wording, NOR validity, cargo responsibility, sanctions wording, or war risk clause can materially change the risk allocation between Shipowners and Charterers.

Commercial Effect of Fixing on Subjects

Fixing on subjects affects both negotiation strategy and market exposure. For Shipowners, a ship on subjects may be temporarily unavailable for other cargoes, but there may be no final contract if subjects are not lifted. For Charterers, fixing on subjects may secure a candidate ship while cargo approval or internal approval is obtained, but it may also create reputational risk if subjects are used unfairly.

In a Shipowners’ market, Shipowners may resist long subjects because demand for ships is strong and alternative cargoes may be available. In a Charterers’ market, Charterers may push for wider subjects and longer deadlines because they have greater bargaining power. In either market, the best practice is to make subjects short, specific, and commercially justified.

Practical Drafting Points for Charterparty Subjects

To reduce disputes, parties should draft subjects with precision. A good subject should identify the approving party, the matter requiring approval, the deadline for approval, the method of communication, and the consequence if approval is not given.

For example, instead of writing only subject approval, the recap should say: “Subject receivers’ approval of ship’s particulars and gear, to be lifted latest 1600 hours London time today, failing which both parties are free.” This wording is clearer because it explains who approves, what is being approved, when the subject expires, and what happens if it is not lifted.

Similarly, a subject stem clause should not be unlimited. It should state the cargo, quantity, loading range, laycan, and deadline for confirmation. If the cargo depends on terminal acceptance, export permit, mine confirmation, or receiver nomination, this should be stated clearly.

Role of Shipbrokers When a Fixture Is on Subjects

Shipbrokers play a critical role in managing subject fixtures. Shipbrokers should record every subject exactly as agreed, identify the party responsible for lifting it, monitor deadlines, send reminders, and confirm when subjects are lifted or fail.

Shipbrokers should avoid vague expressions that can create legal uncertainty. They should also avoid announcing a fixture as completed until the subject position is clear. If there is a difference between English and New York practice, brokers should draw attention to the governing law and encourage principals to define the intended legal effect of the subject.

Accurate recap wording is essential. Many charterparty disputes begin because a fixture recap is unclear, incomplete, or inconsistent with later charterparty details. The recap should not be treated as a casual message; in many cases, it is the most important evidence of the parties’ agreement.

Best Practice for Shipowners and Charterers

Shipowners should avoid holding a ship on vague or long subjects unless the commercial benefit justifies the risk. If Shipowners agree to subjects, they should insist on short deadlines and should confirm that they are free if subjects are not lifted in time.

Charterers should use subjects only when they genuinely need approval or confirmation. If cargo availability, receivers’ approval, or board approval is uncertain, Charterers should disclose the practical reason for the subject and lift it promptly once confirmation is obtained.

Both sides should treat subjects as serious contractual tools, not as informal market language. A subject can decide whether a charterparty exists, whether a party has breached a contract, and whether a claim for damages can be pursued.

Conclusion

Charterparty fixing on subjects is a common feature of ship chartering, but it must be handled carefully. Subjects allow parties to agree commercial terms while waiting for cargo confirmation, ship approval, board approval, receivers’ approval, or detailed charterparty wording. However, they also create legal and commercial uncertainty until they are lifted.

Under English law, subjects such as subject details commonly prevent a binding fixture from arising until they are removed. Under New York practice, agreement on main terms may carry stronger contractual effect even if details remain unresolved. This difference makes precise wording, governing law, subject deadlines, and clear broker communication essential.

The safest approach is simple: use subjects only when necessary, define them clearly, set firm deadlines, record all communications, and lift subjects expressly. In a market where reputation and speed matter, careful handling of subjects protects Shipowners, Charterers, shipbrokers, and the integrity of the chartering process.