A support wire running from the upper part of the mast to the bow of the boat designed to pull the mast forward. A forestay that attaches slightly below the top of the mast can be used to help control the bend of the mast. The most forward stay on the boa ...

An expression of surprise or unbelief, as when a ship strikes a rock or shoal so hard that her timbers shiver.

A pneumatic percussive drill designed as a boring tool.

Depending upon as a condition

The typical winds for a particular region and time of year.

The soft sandstone block sailors use to scrub the deck, so-called, because seamen were on their knees to use it.

A series of sound signals required by COLREGS to prevent collisions at sea.

The passing of several turns of line across the jaw of a hook to prevent something on the hook, such as an eye or a line, from jumping clear.

A schooner with a square rigged sail on the forward mast.

Charge made for local hauling by dray or truck. Same as Cartage.

The short aftermost raised deck of a vessel.

Load/unload control system that tries to maximize compressor efficiency by matching air delivery and air demand. Compressor is operated at full load or idle.

A large body of water taken aboard (ship a sea).

The maximum power required by a given compressor when operating at a (1) constant discharge pressure with variable intake pressure, or (2) constant intake pressure with variable discharge pressure.

Machines in which air or gas is compressed from initial pressure to an intermediate pressure in one or more cylinders or casings.

A knot used to fasten a line or cable to the anchor.

The person or company who is usually the supplier or owner of commodities shipped. Also called Consignor.

In a square rigged ship, the act of hauling the head sheets to windward and laying the head-yards flat aback in order to bring the ships head out of the wind while tacking. This is done when helm action alone is insufficient.

Loss of effective propeller thrust caused by the blades cutting across the column of water sucked along by the propeller instead of working in it. Can also lead to heavy vibration of the vessel.

An old term for getting married.