Sixteenth-century term for a sea distance at which high land could be observed from a ship. Varied between 14 and 22 miles according to average atmospheric conditions in a given area.

Permanent pip iron ballast specially shaped and placed along each side of keelson. Name is sometimes given to any iron ballast.

A type of heating fuel derived by refining crude oil that has a boiling range at atmospheric pressure from 400 degrees to 550 degrees F.

A sailboat with two masts. Generally, the shorter mizzen mast is aft of the main mast, but forward of the rudder post, while a similar vessel, the yawl, has the mizzen mast aft of the rudder post. The mizzen mast of a ketch is larger than that of a yawl.

pattern barometer-Mercurial barometer with a fixed scale and cistern and which therefore requires only one adjustment before each reading.

Kilograms per square centimeter absolute.

The minimum value of Kc for any given material and condition, which is attained when rapid crack propagation in the opening mode is governed by plane-strain conditions.

A type of clutch which has a spring loaded jaw or detented rolling element to control torque in an assembly tool.

The fracture toughness determined under dynamic loading conditions; it is used as an approximation of KIc for very tough materials.

Nautical name for an anchor. Originally, was a stone used as an anchor.

A thousand.

A unit of 1,000 bars of pressure.

1,000 grams or 2.2046 pounds.

See calorie.

A unit of apparent power, equal to 1,000 volt-amperes; the mathematical product of the volts and amperes in an electrical circuit.

A standard unit of electrical power equal to one thousand watts, or to the energy consumption at a rate of 1000 Joules per second.

A unit of power equal to 1,000 watts.

A unit of work, being the work done in one hour at the rate of 1,000 watts.

A unit or measure of electricity supply or consumption of 1,000 Watts over the period of one hour; equivalent to 3,412 Btu.

Is the dynamic viscosity divided by the density