A new screw propeller with higher efficiency than a conventional state-of-the-art propeller.

The principal fore-and-aft component of ship framing, located along the centreline of the bottom and connected to the stem and stern frames.

Heavy wooden or concrete blocks on which ship rests during construction or repair.

A long hollow, square section forging which screws into the top section of a drill pipe. It is driven by the rotary table and provides the drill pipe with both rotational movement and drilling mud, drilling fluid.

The kelvin is the base unit of temperature in the International System of Units (SI), having the unit symbol K.

A machined metal bar which is used to connect a component to a shaft.

Keyless bore propellers are press fitted on the shaft cone. Oil is injected under pressure between the bore and the shaft by means of pumps feeding a system of grooves in the propeller bore.

The groove or slot in which a key fits. It must be carefully designed to avoid weakening of the shaft or creating an area of stress concentration.

A kill switch, also known as an emergency stop, emergency off and as an emergency power off, is a safety mechanism used to shut off machinery in an emergency, when it cannot be shut down in the usual manner.

The kilogram is the base unit of mass in the International System of Units (SI).

A kilogram-force per centimetre square (kgf/cm2), often just kilogram per square centimetre (kg/cm2), or kilopond per centimetre square is a deprecated unit of pressure using metric units.

A unit of power equivalent to 1,000 watts.

The measure of kilowatts used continuously for 1 hour.

The absolute viscosity of a fluid divided by its density at the temperature of viscosity measurement.

In physics, the kinetic energy of an object is the energy that it possesses due to its motion.

Kinetic friction is the friction between moving surfaces.

A conical valve, opening outward, to close the mouth of a pipe which passes through the side of a vessel below the water line.

Kirchhoff's circuit laws are two equalities that deal with the current and potential difference (commonly known as voltage) in the lumped element model of electrical circuits.

A kite is a tethered heavier-than-air or lighter-than-air craft with wing surfaces that react against the air to create lift and drag forces.

The ability of a fuel or fuel/air mixture to prevent engine knocking. Fuel octane rating can be