A running light allowed on some sailboats instead of the normal bow and stern lights. The tricolor light contains the red and green side lights and the white stern light in a single fitting that is attached to the top of the mast.

A measure, proposed by Angstrom, of the precipitation effectiveness of a region.

The quantity to be measured (or modulated, or detected, or operated upon) which is received by an instrument. Thus, for a thermometer. temperature is the input quantity.

The record or trace made by a microbarograph.

A device used to protect the user of any electrical system or appliance from shock.

A fitting around the propeller shaft to keep the bearing lubricated and to keep water out of the boat.

In charting, a short-lived reversal of an upward trend, catching out bears and shorters who were.

The last day on which the beneficiary can present a valid claim to the bank.

A powered hinge.

The upward force produced by the gas in a balloon. It is equal to the free lift plus the weight of the balloon and the attached equipment.

Old Latin name for the south wind.

A masonry or metal stack that creates a draft to bring air to a fire and to carry the gaseous byproducts of combustion safely away.

A propulsion system for boats with an inboard engine operating an exterior drive, with drive shaft, gears, and propeller; also called stern-drive and inboard/outboard.

The maximum rate at which an engine can do work as measured by the resistance of an applied brake. Expressed in horsepower.

An important parameter in establishing an entrained particle's potential to impinge on control surfaces and cause erosion.

Federal On-Scene Coordinator

(1) The location from which a vessel is steered and its speed controlled; navigation and command center of the vessel. (2) A man made structure crossing a body of water.

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

Complete encirclement of a cleat, bollard, pin or winch by a line.

The last day on which the seller can present documents to the advising or issuing bank.