Narrow triangular sail set on a long yard or spar, the forward end of which is hauled down so that it sets obliquely on the mast with a high peak.

A stationary, spirally shaped passage that converts velocity head to pressure.

Water of sufficient depth to allow a boat to travel through it.

Allows foreign merchandise arriving at one port to be transported in bond to another port, where a superseding entry is filed.

A crack or hole that accidentally admits a gas or lets it escape.

A mallet used for passing serving around a line.

A large sail that is a cross between a spinnaker and a genoa. Hoisted without a pole, the tack is attached at the bottom of the headstay.

A passenger or cargo-carrying ship which is operated between scheduled, advertised ports of loading and discharge on a regular basis.

Carefully (watch what you're doing).

A boat owner's private pennant.

(1) Term describing the status of seamen, corresponding to rank in the case of officers. (2) A method of measuring a yacht's expected performance relative to another yacht while racing. Over the years many formulas have been experimented with, in order to ...

To leave port.

Ice extending seaward from land to which it is attached.

Tightly woven cloth used for sails, awnings, covers, dodgers and biminis; slang for sails.

Ties used to tie up the sails when they are furled to the boom or yards.

An item such as a nail, screw, rivet or other device used to fasten objects together.

Sailing upwind so close to the wind that the forward edge of the sail is stalling or luffing, reducing the power generated by the sail and the angle of heel. Also known as pinching.

Seaman's scornful name for any lead of a rope by which effort is lost or wasted.

A penalty charge against shippers or consignees for delaying carrier's equipment beyond allowed time. Demurrage applies to cargo; detention applies to equipment. See Per Diem.

A heavy colorless gas that does not support combustion but is formed by the combustion and decomposition of organic substances. Found in some ambient air conditions.