A surface weather observation, made at periodic times, of sky cover, state of the sky, cloud height, atmospheric pressure reduced to sea level, temperature, dew point, wind speed and direction. amount of precipitation, hydrometeors and lithometeors. and s ...

A sunshine recorder of the type in which the time scale is supplied by a chronograph. It consists of two bulbs, one of which is blackened, which communicate through a glass tube of small diameter. The tube is partially filled with mercury and contains two ...

A basic equation in night visual range theory, relating the illuminance of a point source of light to distance and the transmissivity of the atmosphere.

Place where crew is accommodated.

A unit of heat originally defined as the amount of heat required to raise the temperature of water through one degree centigrade (the gram-calorie or small calorie), but this proved to be insufficiently precise. The 15

Cylinder.

A term for stowing cargo in a container.

A method for making sheets of polycrystalline silicon (for solar photovlotaic devices) in which molten silicon is drawn upward by capillary action through a mold.

A notched support for the boom when the sail is not raised. Unlike a gallows frame, a crutch is stowed when boat is sailing.

A man employed in a vessel of war to take charge of a storeroom; as, boatswain's yeoman the man that has charge of the stores, of rigging, etc.

Wind with a speed below 1 knot (1 mph); Beaufort scale number 0.

Fans in which the direction of the flow of the air from inlet to outlet remains unchanged; includes propeller, tubaxail, and vaneaxial type fans.

An outdoor temperature, usually 20 to 45 degrees Fahrenheit, at which a heatpump's output equals the heating demand. Below the balance point, supplementary heat is needed.

When a bill of lading is accepted or signed by a shipper or shipper's agent without protest, the shipper is said to acquiesce to the terms, giving a silent form of consent.

Transmitted energy which is modulated in order to carry information. Usually, it is in the form of a radio- frequency sine wave, modulated either in amplitude or in frequency.

An energy storage device composed of one or more electrolyte cells.

A rope is fagged when the end is untwisted.

International Maritime Organization.United Nation agency created the 6 March 1948, located in London and taking care of all shipping matters.

A medium-sized instrument shelter. It is a white louvered box with a flat double to of and is mounted four feet above the ground on a four-legged stand.

A sunshine recorder of the type in which the time scale is supplied by the motion of the sun. It consists essentially of a spherical lens which bums an image of the sun upon a specialty prepared card.