An electrical current that periodically reverses its direction. Standard in US and Canada is 60 cycles per second. Europe and other countries is 50 cycles per second.

Privilege to use the rate producing the lowest charge.

The angle a celestial body makes with the horizon.

The elevation of a compressor above sea level.

States that the volume of a mixture of gases is equal to the sum of the partial volumes which the constituent gases would occupy if each existed alone at the total pressure of the mixture.

An old maritime expression meaning "immediately", as "let go amain" (drop the anchor at once!).

The outboard hulls of a trimaran.

Undisturbed environmental surroundings, particularly to air and temperature.

U.S. classification society which certifies seagoing vessels for compliance to standardized rules regarding construction and maintenance.

Generally speaking the word amidships means in the middle portion of a vessel.

In or towards the middle of a ship in regard to length or breadth (center of).

An instrument for measuring electrical current in amperes.

A colorless gaseous compound of nitrogen and hydrogen used in refrigeration and in making of fertilizers and explosives. Found in some ambient air conditions.

States that the pressure of a gas, at constant volume, varies directly with the absolute temperature.

ACRONYM - A unit of electrical current or rate of flow of electrons through a conductor. One volt across one ohm of resistance causes a current flow of one ampere. One ampere is equal to 6.25 x 1018 electrons per second passing a set point in a circuit. A ...

A unit of electrical current or rate of flow of electrons through a conductor. One volt across one ohm of resistance causes a current flow of one ampere. One ampere is equal to 6.25 x 1018 electrons per second passing a set point in a circuit.

In navigation, the angle between the point at which the sun rises and sets and the true east and west points of the horizon.

The U.S. Customs' "Automated Manifest System."

A device or iron so shaped to grip the bottom and holds a vessel at anchor by the anchor chain.