Small horizontal spars extending athwartships from one or more places along the mast. The shrouds cross the end of these "spreaders", enabling the shrouds to better support the mast.

A vertical support for guardrails and lifelines.

A belt and line or wire used to help a crew hike out beyond the edge of a boat to counteract the boat's heel. Usually used on small vessels for racing.

A filter assembly in which the inlet, outlet and filter element axes are in a straight line.

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

Light rope secured to a buoy to hold vessel while stronger moorings are attached.

The study of the earth's waters.

Are the connections between the headers and the work station.

A horn type of vent designed to let air into a cabin and keep water out.

To take down a sail quickly; the entire action of getting a sail out of the wind and furling it.

A storage tank where sewage is stored until it can be removed to a treatment facility.

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

To develop a hole or break in the hull through which seawater could enter. Term originated from a sprung plank.

A recess into the keel or a framework fixed to the keelson in which the mast is placed

A certified document showing the origin of goods; used in international commerce.

Is the total gas pressure (static plus velocity) at the discharge port of the compressor. Velocity pressure is considered only with dynamic compressors.

The upward curvature of the keel towards the bow and stern.

Said of a vessel that is firm, strong, and unlikely to develop leaks.

A waybill covering two or more consignments of freight.

Old term for the boat used by the captain to go ashore.