LO/LO Lift on/Lift off: A term describing the method of loading and discharging cargo by ship or shore gear
LT: Long Ton: A ton of 2240 pounds, equivalent to 1.016 metric tonnes
LWOST: Low Water on Ordinary Spring Tides: A measure of water depth at the low water mark on ordinary (i.e.: not exceptional) Spring tides – see Chart Datum and MLWS MHWS: Mean High Water Spring: and MLWS: Mean Low Water Spring: Average depth of water available at the times of low and of high tides during periods of Spring tides. Some charts are calculated against these ‘averages’ rather than based on chart datum
MHWN: Mean High Water Neaps; and MLWN: Mean Low Water Neaps: Average depth of water available at the times of low and high tides during period of Neap Tides
Min/Max: Minimum/Maximum: Refers to a fixed cargo size – e.g.: ‘10,000 tonnes min/max’ MOL: More or Less: Refers to a cargo size option – say ‘10,000 tonnes, 5 per cent more or less’ – usually clarifying whose option to select the final cargo size – e.g.: -MOLCO: More or Less Charterer’s Option: or, MOLOO: More or Less Owner’s Option MT: Metric Tonne: A tonne of 2,204 pounds or 1,000 kilograms, equivalent to 0.9842 long tons Measurement Tonne: Used in the liner trades and equal to 1 cubic metre or in trades still using imperial measurement 40 cubic feet (although this latter is now almost in disuse) NAABSA: Not Always Afloat But Safely Aground: Most owners (especially of deep sea vessels) will stipulate that their ships proceed only to ports where there is sufficient water to remain always afloat, so as to avoid the risk of hull damage. There are areas and ports, however, where water depth is restricted but, the bottom being soft mud, it is customary for ships to safely lie on the bottom at certain states of the tide. – e.g.: River Plate. In such a case, owners will probably agree to proceed NAABSA.