The last buoy as a boat heads to sea.

Sea water used for ballast, let into the double bottom, or into a water-ballast tank, or trimming tanks.

River and Harbour Service.

A fabric cone attached to a metal ring and used to indicate wind direction. often at airfields.

The operation of bringing two lines together; term also applied to other objects.

A room heat delivery (or exchanger) component of a hydronic (hot water or steam) heating system; hot water or steam is delivered to it by natural convection or by a pump from a boiler.

A diagram that indicates the average percentage of time that the wind blows from different directions, on a monthly or annual basis.

A curve that indicates the number of hours per year that specific wind speeds occur.

The Cadbury Code is the unofficial name for the first Code of Best Practice on corporate.

A gigantic sea animal.

Tightly woven cloth used for sails, awnings, covers, dodgers and biminis; slang for sails.

A volume. Pounds per hour.

When the stock market opens above or below the close on the previous day, this is known as a.

A navigational aid with a light that flashes about once per second.

Pertaining to forces on a body or part of a body that tend to crush or compress the body.

The regular periodic arrangement of atoms or molecules in a crystal of semiconductor material.

A unit of measurement for the ability of a material to retard the diffusion of water vapor at 73.4 F (23 C). A perm, short for permeance, is the number of grains of water vapor that pass through a square foot of material per hour at a differential vapor p ...

A device used to control temperatures; used to control the operation of heating and cooling devices by turning the device on or off when a specified temperature is reached.

See cathodic protection.