Is the ratio in absolute units of the actual gas temperature to the critical temperature.

The gears that reduce engine speed to propeller speed.

(1) The rolled up part of a sail, tied with the reef lines, that is used to reduce sail area for heavy winds; To reduce the sail area. (2) A group of rocks or coral generally at a depth shallow enough to present a hazard to navigation.

To reduce the area of a sail by making fast the reef points (used in rough weather).

Reinforced cringles or thimbles in the sail designed to hold the reefing lines when reefing the sail.

Also known as the square knot, it is formed by two half hitches in which the ends always fall in line with the outer parts. This knot is used to loosely tie lines around the bundles of sail that are not in use after reefing.

Short pieces of line fastened to the sail at reef points, used for tying a reef to reduce sail area. The reef line will pass through reef cringles, which will become the new tack and clew of the reefed sail.

Short lengths of line attached to the sail used to tie the extra sail out of the way when reefing.

A band of stout canvass sewed on the sail across, with points in it, and earings at each end for reefing. A reef is all of the sail that is comprehended between the head of the sail nd the first reef-band, or between two reef-bands.

A tackle used to haul the middle of each leech up toward the yard, so that the sail may be easily reefed.

Refrigerator ship; a vessel designed to carry goods requiring refrigeration, such as meat and fruit. A reefer ship has insulated holds into which cold air is passed at the temperature appropriate to the goods being carried.

Refrigerated container.

An insulated shipping container designed to carry cargoes requiring temperature control. It is fitted with a refrigeration unit which is connected to the carrying ship's electrical power supply.

The operation of reducing a sail by taking in one or more of the reefs.

Removal of worn or damaged gear and the fitting of new gear in replacement.

Media of heat transfer in a refrigeration unit. R12 and R22 are commonly used refrigerants.

A device consisting of a heat transfer system, a moisture elimination system and a refrigeration system designed to improve the quality of the air and reduce the temperature of the air.

The process of desiccants being regenerated by water being driven off the desiccant. Hot air or gas passes through the desiccant bed, heating it. As a result, the partial pressure of the water vapor becomes higher than that in the regenerating air. Water ...

The country in which the vessel is registered.

The ship's certificate determining the ownership and nationality of the vessel. Relieving tackle