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


Related Terms

SPREAD

The divergence of the air stream in a horizontal or vertical plane after it leaves the outlet.

SAIL LOFT

A large open space used by sailmakers to spread out sails.

WHISKER

A spreader from the bows to spread the bowsprit shrouds.

CHAINS

Small platforms built into the sides of a ship to spread the shrouds to a more advantageous angle. Also used as a platform for manual depth sounding.

YARD

A tapering spar attached to ship's mast to spread the head of a square sail.

CHART TABLE

A flat surface on which charts are spread out, particularly one without stowage space below the plotting surface. One provided with stowage space is usually called a CHART DESK.

CHART DESK

A flat surface on which charts are spread out, usually with stowage space for charts and other navigating equipment below the plotting surface. One without stowage space is called a CHART TABLE.

DEVELOPABLE SURFACE

A curved surface that can be spread out in a plane without distortion, e.g., the cone and the cylinder.

CYLINDRICAL MAP PROJECTION

A map projection in which the surface of a sphere or spheroid, such as the earth, is conceived as developed on a tangent cylinder, which is then spread out to form a plane.

POLYCONIC MAP PROJECTION

A conic map projection in which the surface of a sphere or spheroid, such as the earth, is conceived as developed on a series of tangent cones, which are then spread out to form a plane. A separate cone is used for each small zone. This projection is widely used for maps but seldom used for charts, except for survey purposes. It is not conformal.

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