A spring loaded pressure relief valve actuated by the static pressure upstream of the valve. The valve opens normally in proportion to the pressure increase over the opening pressure.

A brace, usually triangular, for reinforcing a corner or angle in the framework of a structure.

The black line parallel with ship's keel marked on the inner surface of the bowl of a compass, indicating the compass direction of the ship's head.

LPG or propane for short. Propane is a common fuel used for cooking and heating. CNG natural gas is considered safer because propane is heavy than air and will sink into the bilge if it leaks, creating the potential for an explosion. Propane is more easil ...

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

Articles handled only under certain conditions.

A term commonly used in connection with a bill of lading. It involves the transfer of rights, title and interest in order to assign goods by endorsing the bill of lading.

The helmsman.

Anchor is off the sea bottom when being heaved in .

To unload a shipping container.

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.

An old salt I know uses this term in reference to a "tangled mess of lines".

Dispute Settlement Understanding

(1) The transverse measurement of a boat at its widest point. Also called breadth. (2) One of the transverse members of a ship's frames on which the decks are laid.

Imaginary lines drawn through the north and south poles on the globe used to measure distance east and west of the prime meridian at Greenwich, England (designated as 0

Abbreviation for "Cubic Meter" (capital letters).

Sailing in the same direction as the wind with the wind coming from the stern.

A contract for transportation between a shipper and a carrier. It also evidences receipt of the cargo by the carrier. A bill of lading shows ownership of the cargo and, if made negotiable, can be bought, sold or traded while the goods are in-transit.

A multihulled boat with three hulls.

A short piece of line spliced into the end of the clapper by which the bell is struck. Traditionally it is finished off with a double wall knot crowned in its end.