To turn the boat head-to-wind so as to go about on the opposite tack

A reaction in which there is a decrease in valence resulting from a gain in electrons. Contrast with oxidation.

An additional keel secured outside the main keel, usually as protection in the event of grounding.

A hydropower plant that is operated at maximum allowable capacity for part of the day and is either shut down for the remainder of the time or operated at minimal capacity level.

The distance a boat can move around its anchor. Swinging room is important because if other boats or objects are within a boat's swinging circle they may collide.

See auxiliary electrode.

A triangular fore-and-aft sail carried on a stay. A sail that is set on a stay, and not on a yard or a mast. On a cutter this is the sail located between the jib and the main sail

A policy which covers the insured against the loss of an asset. The purpose of the insurance is to.

The addition of dopants to a semiconductor.

An instrument which measures combined direct solar radiation and diffuse sky radiation. See pyrheliometer, Robitzsch actinograph. solarimeter. See also albedometer.

When the wind shifts toward the bow. Opposite of lifted.

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

Place where a ship should report when passing i.e. when approaching a port.

Cloths hung on the lee side of a berth to keep one from rolling out of their bunk

See S&W

In the US, a reputable stock with a record of consistently high dividend payments to.

A seal used to prevent the leakage of fluids, and also maintain the pressure in an enclosure.

A type of water heater that circulates water through a heat exchanger in a boiler. The heated water then flows into an insulated storage tank.

The process by which materials expel or release gasses.

A bond which was issued at a rating of AAA to BBB (investment grade) which has since fallen in.