Very small wooden pail having one stave prolonged to form a handle. Used as a bailer in a boat.

On a square-rigged ship, the act of lowering a spar or yard to the deck.

Part of the standing rigging that helps to support the mast laterally by running from the top of the mast to the side of the boat. Sailboats usually have one or more shrouds on each side of the mast. Some people call them side stays

The gauge pressure at which a safety valve visibly and audibly opens or at setting which a relief valve discharges an unbroken stream of liquid.

To know and to be able to recite the points of a compass from north to south to north again, both clockwise and counter-clockwise.

The forward mast of a boat with more that one mast

Resistance to flow. Defined as the difference in pressure upstream and downstream.

A device actuated by inlet static pressure and designed to open during an emergency or abnormal condition to prevent a rise of internal pressure in excess of a specified value.

To change a boat's direction, bringing the bow through the eye of the wind.

The horsepower calculated from compressor-indicator diagrams. Applied only to displacement type compressors.

A small channel or opening in a filter medium which allows passage of gas.

A pneumatic device with a rotary output. Typically of a vane or rack-and-pinion construction.

A pillar or handhold on a boat - Hand-hold fittings mounted on cabin tops and sides for personal safety when moving around the boat.

Joining the ends of two lines without increasing the thickness over the length of the splice, so that the splice will pass freely through a block.

A hard-chined dinghy with flared sides, considered a useful weight-carrying work boat.

A single masted cutter built expressly for the prevention of smuggling and the enforcement of customs regulations.

Is any gas or gas mixture that contains no water vapor and/or in which all of the constituents are substantially above their respective saturated vapor pressures at the existing temperature.

Is a process taking place under constant temperature. To compress the gas from state 1 to state 2, heat must be removed to keep the temperature constant. The pressure change is reciprocal to the change in specific volume.

A name usually given to a State body having control or regulation of public utilities.

A piece of wood fitted in various places to act as a preventative to chafe.