Amount of time for a compressor to complete one cycle.

It is the weight of the column of air existing above the earths surface at 45

A label required on shipments of flammable articles.

A vessel whose bow and stern have drooped. The opposite of sagged.

To approach something from upwind

The wheel of the block over which the fall of the block is rove.

To coil flat down on deck, each fake outside the other, beginning in the middle and all close together.

see Watch

A gas produced by many fruits and vegetables that accelerates the ripening and aging processes.

A can buoy. A cylindrical buoy painted green and having an odd number used in the United States as a navigational aid. At night they may have a green light. Green buoys should be kept on the left side when returning from a larger body of water to a smalle ...

Air cylinder

The use of a sound barrier separating the sound from the receiver.

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

Area of high barometric pressure where the wind circulates clockwise in the Northern Hemisphere, and counter-clockwise in the Southern Hemisphere. These are fair weather systems with light or moderate winds.

Forward. The opposite of abaft.

The topmost planking in the sides, next below the gunwale, often thicker than other planking.

Any point of sail with the wind coming from the side of the boat. If the wind is coming from directly over the side, it is a beam reach. If the wind is coming from forward of abeam it is a close reach. If the wind is coming from over the quarter, it is ca ...

Pieces of plank bolted to the outer end of the bowsprit, to reeve the foretopmast stays through.

The largest circle which can be inscribed on a sphere by a plane that cuts through the center of the sphere. On the earth, the equator is a great circle, as are all the meridians of longitude which pass through both poles. The shortest distance between tw ...

Usually refers to a rating that applies to an article regardless of size or quantity.