The U.S. government does not issue certificates of free sale. However, the Food and Drug Administration, Silver Spring, Maryland, will issue, upon request, a letter of comment to the U.S. manufacturers whose products are subject to the Federal Food, Drug ...

The swiveled opening at the top of a ventilator.

(1) The condition of a vessel stranded on a reef or a rock when the seas break over her deck. (2) Half drunk; incapacitated by drink.

The top point of the line about which the earth rotates.

The condition when a perfect gas is isentropically compressed, and the gas inlet temperature and also the amount of work spent is the same for each stage.

Said of cable when it extends vertically and taut from anchor to hawsepipe.

A prisoner sold in the slave market. He was forced to serve in the war galleys, where he pulled on one of the oars.

A wind shift that allows a boat to sail above its mean wind course.

Compressors of 20 HP or less, generally combined with all the components required to put the into operation.

A capacity measurement equal to one-fourth of a barrel.

The relationship of flow per unit area to differential pressure across a filter medium.

Sailing vessel with three or more masts. Square rigged on foremast, fore and aft rigged on all others.

A sail set forward of the foremast on the headstay; a foresail

Owners or operators of vessels providing transportation to shippers. The term is also used to refer to the vessels.

The position of a flag when lowered halfway down.

Small boat carried on the vessel and used in case of emergency.

A list of navigational lights arranged in geographical order, giving the position and characteristics.

A naval rank next below that of admiral.

A signboard attached to a daybeacon to convey navigational information presenting one of several standard shapes (square, triangle, rectangle) and colors (red, green, orange, yellow, or black). Daymarks usually have reflective material indicating the sha ...

An agreement to hold a carrier harmless with regard to a liability.