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

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 ...

The component of a central air conditioner that is designed to remove heat absorbed by the refrigerant and transfer it outside the conditioned space.

Board that holds graph paper on which is plotted information obtained from a pilot-balloon observation.

An anemometer which derives wind speed from measurements of dynamic wind pressures. Wind blowing into a tube develops a pressure greater than the static pressure, while wind blowing across a tube develops a pressure less than the static. This pressure dif ...

A publication predicting the time and height of high tide and low tide.

A brace, usually triangular, for reinforcing a corner or angle in the framework of a structure.

A type of solar thermal collector that has tubes (pipes) that the heat transfer fluid flows through that are connected to a flat absorber plate.

A kind of winch designed for hoisting and lowering the work-boat.

A ship drives when her anchor fails to hold and she is at the mercy of wind and tide, or when she can make no progress against the wind.

A type of heating system in which the heat transfer fluid circulates from the heating component to a heat exchanger that is immersed in a heat storage media, passing its heat to the storage media without physically contacting it.

A term used to describe heat energy lost from a water heater tank.

The making of a gift by will. See.

A metal appliance consisting of a thread and screw capable of being set up or slacked back and used for setting up on rigging.

Two short pieces of timber fixed horizontally fore and aft on each side of the lower masthead of a square rigged vessel and used to support the topmast, the lower crosstrees, and the top.

Break; e.g., the line parted under strain

A type of heating appliance that extracts so much of the available heat content from a combusted fuel that the moisture in the combustion gases condenses before it leaves the furnace. Also this furnace circulates a liquid to cool the furnace's heat exchan ...

The unofficial filtration industry description for filters designed to trap small size contaminants.

The production of electrical current from light.

The athwartship portion of a hull at the stern. The flat, vertical aft end of a ship.