GAFF-TOPSAIL

A triangular topsail with its foot extended upon the gaff.

gaff_topsail topsail foot

Related Terms

OUNCEDAL

A unit of force equal to the force which will impart an acceleration of 1 foot per second per second to a mass of 1 ounce; equal to 0.0086409346485 newton.

ouncedal foot mass acceleration unit force

LOADING DENSITY

The number of pounds of explosive per foot length of drill hole.

loading_density length foot number drill

1. A standardized part of a surveyor's chain, which is 7.92 inches (20.1168 centimeters) in the Gunter's chain and 1 foot (30.48 centimeters) in the engineer's chain. 2. One of the rings of a chain. 3. A connecting piece in the moving parts of a machine.

link chain part foot gunter's_chain moving

JERK

1. The rate of change of acceleration; it is the third derivative of position with jerk pump respect to time. 2. A unit of rate of change of acceleration, equal to 1 foot (30.48 centimeters) per second squared per second.

jerk foot pump rate jerk_pump jerk unit position

JACK PLANE

A general-purpose bench plane measuring over 1 foot (30 centimeters) in length.

jack_plane plane foot bench_plane bench

INCH

A unit of length in common use in the United States and the United Kingdom, equal to 1/12 foot or 2.54 centimeters. Abbreviated in.

inch length foot unit

SAILING_BOOM

A spar attached to the foot of a fore-and-aft sail.

sailing_boom spar fore_and_aft sail foot sail.

FOOT

1. the lower edge of any sail. 2. the bottom of a mast. 3. a measurement of 12 inches.

foot bottom measurement edge sail.

JACKYARD

A spar used to spread the foot of a gaff-topsail.

jackyard spar gaff_topsail foot spread

STRETCHER

An inclined foot rest, attached to the boat, to which a rower may place and in some instances (usually in competition) attach his feet.

stretcher foot place rower