Where the water and sky or ground and sky appear to intersect.

A running light allowed on some sailboats instead of the normal bow and stern lights. The tricolor light contains the red and green side lights and the white stern light in a single fitting that is attached to the top of the mast.

A device which operates compressors in sequence according to a programmed schedule.

Money paid by shipper to Master of ship for diligence in care of cargo. Not now paid to Master, but added to freight. Amount was usually about 1% of freight.

Complete encirclement of a cleat, bollard, pin or winch by a line.

A fitting around the propeller shaft to keep the bearing lubricated and to keep water out of the boat.

The maximum rate at which an engine can do work as measured by the resistance of an applied brake. Expressed in horsepower.

Sailor's name for a block of sandstone used for scrubbing the wooden decks of a ship; seamen had to get down on their knees to use them. Large holystones were known as "Bibles", while smaller blocks to reach awkward places were known as "Prayer Books" ...

The use of a sound barrier separating the sound from the receiver.

A propulsion system for boats with an inboard engine operating an exterior drive, with drive shaft, gears, and propeller; also called stern-drive and inboard/outboard.

A label required on shipments of flammable articles.

An important parameter in establishing an entrained particle's potential to impinge on control surfaces and cause erosion.

Old Latin name for the south wind.

(1) The location from which a vessel is steered and its speed controlled; navigation and command center of the vessel. (2) A man made structure crossing a body of water.

A vessel whose bow and stern have drooped. The opposite of sagged.

To approach something from upwind

A ring-shaped fitting into which the rudder pintle is inserted which allows the rudder to pivot.

A pole used as part of the sailboat rigging, such as masts, booms, gaffs, yards, etc. A vertical spar is a mast.

Old seafaring term meaning something very difficult or awkward. see Devil

see Watch