General Average. “Average” means “partial loss” in this context. “General Average” is closely connected to marine insurance today but actually originated many years before the idea of marine insurance was born.

Grain space.The grainspace is the complete capacity of the ship’s cargo spaces (including hatchways), measured in cubic feet or cubic metres.

Guaranteed space per ton. In the grain trade from the River Plate charterers have a decided preference for vessels disposing of a good cubic capacity in relation to their deadweight capacity. Sometimes the cubic capacity is guaranteed by the owners, in which case the following clause would be included in the CENTROCON charter:

General average adjustment. This is a very complicated task because of the many interests that may be involved. Average adjusters are appointed before or after GA is declared and they proceed with adjustment.

General cargo contract. This is fundamentally a loyalty agreement or arrangement by which the shipper undertakes to ship all his cargo with an independent liner company or with a liner conference.

GRI (General Rate Increase).This is the percentage increase of a liner conference tariff of freight rates when it becomes necessary to cover costs and make a sufficient profit for an acceptable return on the carrier’s investment. It is imposed after publication and a discussion period, usually of about three months.


Grab discharge. Charterers of coal, ore, phosphate in bulk, wheat, bulk sugar, grains etc. which can be discharged by grabs, often stipulate that no cargo must be loaded in "deep tanks".

General average and marine insurance. Under section 66 (4) of the Marine Insurance Act 1906, where the assured has incurred a general average expenditure he may recover from the insurer a proportion of the loss to him.

Gross tonnage. Under the pre-1982 British tonnage system, for purposes of measurement, gross tonnage is the sum of the following volumes:

Grain capacity. This is part of the description of the cargo carrying capacity of the ship. It is sometimes termed "Grain space capacity" or "Grain space”.

General Average clauses. There are generally two protective clauses in a charterparty dealing specifically with G/A. One states that if there is to be adjustment after a G/A act or sacrifice or expenditure, the adjustment is to be carried out according to the York-Antwerp Rules in some specified place, the law and practice of which will apply to the adjustment.

Grain clauses. Grain cargoes can be dangerous for the stability of the ship because the grain has a tendency to shift when the ship moves in a seaway.

Gross terms (Gross Charter). If in addition to the full operating costs of the ship, all other expenses, tally charters, etc. are for owners' account the charter is a "gross charter" or fixture on "gross terms".

General Purpose container: 40 feet x 8 feet x 8 feet 6 inches (12.2m x 2.4m x 2.6m) with minimum interior dimensions of 12.0 15m x 2.337m x 2.362m. Door dimensions of 2.335m x 2.260m, a cubic capacity of 66.3 cubic metres and a maximum tare weight of 3.730 tonnes.