It may occur that charterers, in order to attract tonnage agree to pay a certain ballast bonus. The ballast bonus serves as a compensation and incentive for the ballast (empty) trip from the ship's last port of discharge to the port where the charter will commence, for example, the first place of loading under a voyage charter or the point of delivery under a time charter. It is more common under time charters, especially in a good market when charterers are unable to obtain ships easily or at a low rate of hire.For the shipowner, the BB covers the cost of fuel and time in proceeding to … [Read more...]

A charterparty may contain a clause, which stipulates that if the charterers load grain in bulk, they must supply to the master on his request sufficient empty bags to be used to collect any grain, which was spilled, and any grain that remained in the cargo space after discharge. … [Read more...]

substantial baulks of timber, used to accept the weight of a heavy load on a steel deck. The bearers are laid for two reasons:To spread the load weight over a greater area of the deck. To prevent steel loads slipping on the steel deck plate.  … [Read more...]

Additional strength stays applied to the opposing side of a mast structure when making a heavy lift. These stays are not usually kept permanently rigged and are only set as per the rigging plan when a heavy lift is about to be made. … [Read more...]

A mechanical device used for the purpose of cleaning oil tanks by means of high pressure jets of hot water. The apparatus basically consists of double opposed nozzles which rotate slowly about their horizontal and vertical axis and project two streams of water through all possible angles against all inside surfaces of the space being cleaned. The tank washing machines can deliver sprays of water at various temperatures and pressures that are dictated by the type of cargoes carried and the reasons for cleaning (Quick bottom wash through gas-freeing and tank entry for hot work). … [Read more...]

A floating object employed as an aid to mariners to mark the navigable limits of channels, their fairways, sunken dangers, isolated rocks, telegraph cables, and the like. … [Read more...]

Fuel for a vessel. The type will vary depending upon the propulsion mode of the vessel. Steamships will use a heavy fuel oil, Motor ships use a range of fuels from heavy to light oil. … [Read more...]

The various partitions which separate one part of a ship from another.The steel vertical partitions found between compartments. They compensate for racking, water pressure, dry docking and heavyweight stresses. They also combat hogging, sagging and shear forces.Bulkhead Deck – Defined as the deck up to which all the main watertight transverse bulkheads extend. … [Read more...]

Usually a homogeneous cargo stowed in bulk, and not enclosed in any container. … [Read more...]

A large protruding bow section designed to break water friction allowing the vessel to make better speeds. The shape of the foremost portion of the ship, the bow, in the form of a rounded bulb instead of the traditional V-shape, in order to reduce hull resistance and its effect on speed in the water. … [Read more...]