Wooden shoulders attached below the masthead to either side of a wooden mast which originally supported the trestle trees.

A verb with a variety of meanings. To round in is to haul in quickly; to round up is to bring a sailing vessel head into the wind; to round down a tackle is to overhaul it; to round a mark is to pass a racing mark.

Words incorporated when signing under duress and not concurring entirely with import of document signed, and after stating grounds of non-concurrence.

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

An ocean carrier company operating vessels not on regular runs or schedules. They call at any port where cargo may be available.

On square-rigged ships, a small light square sail set above the skysail in fair weather. If the sail were triangular, it would be called a Skyscraper.

Heat exchangers for removing the heat of compression between stages of a compressor.

Polytetrafluorethylene.

(1) A piece of equipment used to drive piles into the ground. (2) Name given to a ship which because of her short length, cannot ride two consecutive waves, and pitches violently into the second.

Seamen who worked on the masts and yards of square-rigged ships.

Calling names of the points of the compass in order.

all material and energy present in and around an operating system, such as dust, air moisture, chemicals, and thermal energy.

Letter of credit in which the specified payment is guaranteed by the bank if all terms and conditions are met by the drawee and which cannot be revoked without joint agreement of both the buyer and the seller.

Straps to hook your feet under in cockpit when hiking out.

The slowest speed at which a vessel steers.

An old seafaring dish made of boiled oatmeal seasoned with salt, sugar, and butter.

The navigable water to leeward of a vessel.

A time draft under a letter of credit that has been accepted and purchased by a bank at a discount.

An instrument that uses sound waves to measure the distance to the bottom.

A mast supported by the use of lines or wire known as stays and shrouds.