Across the width of a boat. Also Athwartships.

A certificate issued as a result of an examination of competency and experience. Some refer to their USCG license as their ticket

Small charts showing tidal stream directions and rate of flow.

The horizontal movement of the water due to tide

The power available from the rise and fall of ocean tides. A tidal power plant works on the principal of a dam or barrage that captures water in a basin at the peak of a tidal flow, then directs the water through a hydroelectric turbine as the tide ebbs.

The difference in depth between high and low tide.

Term meaning smart or neat.

A device for measuring the height of tide. It may be simply a graduated staff in a sheltered location where visual observations can be made, or it may consist of an elaborate recording instrument (sometimes called a marigraph) making a continuous graphic ...

Short waves or ripples made by a tide as it ebbs or flows over an uneven bottom, or where two currents meet at sea.

A publication predicting the time and height of high tide and low tide.

Hinged extension of the tiller which allows the skipper to control the tiller while hiking or sitting forward.

The angle at which a solar collector or module is set to face the sun relative to a horizontal position. The tilt angle can be set or adjusted to maximize seasonal or annual energy collection.

A type of journal bearing in centrifugal air compressors.

Method of securing a line around a spar by taking the standing part around the spar, then a half hitch around itself and the end tucked three or four times around its own part.

On wooden vessels, the frames or ribs of a ship, connected to the keel, which give shape and strength to the ship's hull.

Time after which legal claims will not be entertained

A contract for leasing between the ship owners and the lessee. It would state, e.g., the duration of the lease in years or voyages.

The time required for an instrument to registe 63.2% of a step change in the variable being measured.

A draft that matures either a certain number of days after acceptance or a certain number of days after the date of the draft.

A device that can be set to automatically turn appliances (lights) off and on at set times.