The whole frame or body of a ship, exclusive of the masts, yards, sails, and rigging. … [Read more...]

The latitudes on the outer margins of the trades where the prevailing winds are light and variable. … [Read more...]

An imperfection, spots left unfinished in cleaning or painting. … [Read more...]

That part of the ship below the lower deck, between the bulk-heads, which is reserved for the stowage of ballast, water, and provisions, in a ship of war; and for that of the cargo, in merchant vessels.The space below decks utilized for the stowage of cargo and stores. … [Read more...]

The condition of a vessel caused by the unequal distribution of cargo. When a vessel loads too heavily at the ends it causes an arching, or bending upward, of the hull at the midships area. This can also be caused by the vessel working in heavy seas with a large wave under the amidships section.A ship is said to hog when the middle part of her keel and bottom are so strained as to curve or arch upwards. This term is therefore opposed to sagging, which, applied in a similar manner, means by a different sort of strain, to curve downwards. In order to elucidate this subject, let us suppose a … [Read more...]

The whole of the machinery astern, which serves to steer or guide the ship, as the rudder, the tiller, the wheel. … [Read more...]

The lower end of a timber.A ship is also said to heel when she is not upright. … [Read more...]

A small line thrown to an approaching vessel, or a dock as a messenger. … [Read more...]

Coils located in the bottom of cargo tanks that steam passes through to heat cargo. The heat lowers the viscosity of the cargo and permits easier pumping of the cargo at the discharge port. Vessels in clean service normally do not have or need heater coils as the viscosity of the clean products (with the exception of some lube oils) is high enough to permit easy pumping at atmospheric temperatures. … [Read more...]

The horizontal direction of the vessel's bows at a given moment measured in degrees clockwise from north … [Read more...]