Special Material

Port and Tanker Safety Act.

The topmost planking in the sides, next below the gunwale, often thicker than other planking.

A large, flat bottomed boat used to carry the mud from a dredge.

Method of securing a line around a spar by taking the standing part around the spar, then a half hitch around itself and the end tucked three or four times around its own part.

Coating containing a zinc powder pigment in an inorganic vehicle.

The temperature at which the liquid and solid forms of a substance may exist in equilibrium at a given pressure (usually one standard atmosphere). The true freezing point of water is known as the ice point.

A container that holds rock used as the thermal mass to store solar energy in a solar heating system.

A company on the London Stock Exchange with a large market capitalisation, stable earnings,.

Sailor's name for a block of sandstone used for scrubbing the wooden decks of a ship; seamen had to get down on their knees to use them. Large holystones were known as "Bibles", while smaller blocks to reach awkward places were known as "Prayer Books" ...

The athwartship portion of a hull at the stern. The flat, vertical aft end of a ship.

A metal whose luster has been reduced because of a surface film, usually a corrosion product layer.

Plastic deformation by the irreversible shear displacement (translation) of one part of a crystal relative to another in a definite crystallographic direction and usually on a specific crystallographic plane. Sometimes called glide.

(1) An arbitrarily defined temperature that lies within the temperature range in which metal fracture characteristics (as usually determined by tests of notched specimens) change rapidly, such as from primarily fibrous (shear) to primarily crystalline (cl ...

A four sided sail bent onto a yard. Similar to a gaff sail, but with a wider throat.

A type of power inverter that produce a high quality (nearly sinusoidal) voltage, at minimum current harmonics.

Ferrire that is formed directly from the decomposition of hypoeutectoid austenite during cooling, without the simultaneous formation of cementite. Also called proeutectoid ferrite.

Programmable Read-Only Memory. Read-only memory which can be programmed by the user using a special hardware programmer.

Thermometer for measuring the temperature in the soil at different depths.

Forward. The opposite of abaft.