Limber hole of a ship.

A halyard used to raise the spinnaker.

The ratio of the indicated power to shaft input.

A boat which uses the wind as its primary means of propulsion.

Having to do with boats, ships, or sailing.

Additive that promotes the formation of a stable mixture, or emulsion, of oil and water. Common emulsifiers are: metallic soaps, certain animal and vegetable oils, and various polar compounds.

A sailboat with its bow pointed directly into the wind, preventing the sails from filling properly and stopping the boat. It can be very difficult to get a boat that is in irons back under sail. also known as "In Stays".

The stationary seating surface, the inlet of a valve.

Capacity of a compressor is the full rated volume of flow of gas compressed and delivered at certain set conditions.

Above this pressure, the system may rupture or burst.

A navigational instrument which provides a bearing to a radio beacon.

One who designs ships.

Originally, to suck rum from a coconut, the end of the nut resembling a monkey's face. Later, illicitly to suck spirit from a cask, usually through a straw. Also called Bleed the Monkey.

Is used to cool compressed air or gas. Designed to reduce the temperature and liquefy condensate vapors.

Said of a vessel when caught between ice on both sides.

Sails that are not properly arranged for the point of sail that the boat is on. The sails may be luffing or have improper sail shape, or the boat may be heeling too much. These conditions will slow the boat down.

Is the term used for average atmospheric air at sea level in a temperature zone where it contains some moisture. It is defined in the ASME Test Code For Displacement Compressors as being at 14.696 psiA, 68

A point of sail where the boat is sailing at a right angle to the wind (wind coming from abeam). A beam reach is usually the fastest point of sail. A beam reach is a point of sail between a broad reach and a close reach.

A smooth hard wood grown in the West Indies which had many maritime uses, such as deadeyes and the sheaves of blocks. Its hardness stood up well to wear, and its smoothness allowed lines to render through easily.

Devices used between rotating and stationary parts to separate, and minimized leakage between, areas of unequal pressures.