Energy terms

Change direction so as to point closer to where the wind is coming from. The opposite of falling off.

A short piece of rope secured in the bow of a small boat used for making her fast.

The maximum distance, usually horizontally, at which a given object or light source is just visible under particular conditions of transmittance and background luminance.

After or trailing edge of a sail; the after edge of a fore-and-aft sail and the outer edges of a square sail.

Bell used for striking the half hours of each watch.

Tween Decker

An instrument for the measurement of the rate of ice accretion on an unheated body.

A list of metals and alloys arranged according to their relative corrosion potentials in a given environment. Compare with electromotive series.

Abbreviation for "Not Otherwise Indexed By Name."

The distance a boat can move around its anchor. Swinging room is important because if other boats or objects are within a boat's swinging circle they may collide.

(ERISA)In the US, a federal law introduced for the protection of participants in private pension.

Lloyds Machinery Certificate

Sailing other than close; hauled or into the wind (wind astern).

(ISA)A tax-favoured savings account introduced on 6th April 1999 which replaced PEPs and TESSAs. ISAs.

A safe anchorage, protected from most storms; may be natural or man-made, with breakwaters and jetties; a place for docking and loading.

A deck exposed to the wind and sea.

See hydrologic accounting.

Allows foreign merchandise arriving at one port to be transported in bond to another port, where a superseding entry is filed.

This designates the resistance of a material to heat conduction. The greater the R-value the larger the number.