A card marked in degrees and having sightings on it that is used to take bearings relative to the ship, rather than magnetic bearings as taken with a compass.

A location that is not sheltered from the wind and seas. An open location would not make a good anchorage.

Seaward, a safe distance from shore; To keep an offing is to keep a safe distance away from the coast because of navigational dangers, fog, or other hazards.

Sailing other than close; hauled or into the wind (wind astern).

Sailor's phrase for a seaman who has died.

The lines that lead from the clew of the jib to the cockpit and are used to control the jib.

A method of lowering the sail in sections so that it can be reefed quickly.

A type of schooner without a bowsprit.

The equipment used to sail a boat, including sails, booms and gaffs, lines and blocks, etc.

(1) To bind a line with marline, cord, twine, wire, or other "small stuff" to prevent accidental opening or unraveling (2) To freeze up, as a valve.

Opposite of absorption or adsorption. In filtration, it relates to the downstream release of particles previously retained by the filter.

To receive goods from a foreign country.

Rope made of the fibers of the hemp plant and used for small stuff or less than 24 thread (1.75 inch circumference). (Rope is measured by circumference, wire by diameter.)

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.

A compressor belonging to the group of displacement reciprocating compressors.

The height of the decks, below decks.

An indicator that signals pressure conditions.

A wharf licensed and attended by Customs authorities.

A plot of expected operating characteristics (e.g.., discharge pressure versus inlet capacity, shaft horsepower versus inlet capacity).