An opening in a ship's side, provided with a glazed lid or cover for the admission of light.

A form of data transmission in which the bits of each character are all sent simultaneously, resulting in extremely fast communication but requiring a communication path for each bit. Compare to serial data transmission.

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

"NIMH" refers to nickel metal hydride; it's an updated and better version of a NiCd battery. It has more power and doesn't need to be fully discharged regularly, unlike a NiCd battery. It operates well in digital cameras, motorized children's toys and cor ...

International Shipping Federation

The ratio of the output of an instrument to the input value, i.e. a rain gauge with a sensitivity of 1 tip per 0.01"

A configuration of an electrical circuit in which the voltage is the same across the terminals. The positive reference direction for each resistor current is down through the resistor with the same voltage across each resistor.

The end of year dividend. In the UK, companies normally pay dividends twice per year, an interim.

The names of battles or individual ship actions in which a warship has taken part, usually displayed in a prominent place on a ship as a source of pride in her name. Known as Battle Stars in the U.S. Navy.

To turn the boat head-to-wind so as to go about on the opposite tack

Openings in the bottom or transom of a boat to drain water when sailing.

The part on the object which is hauled upon.

A general term for instruments which sample atmospheric suspensoids by impaction. Same as impactometer.

The ratio of the minimum amount of work or energy required to perform a task to the amount actually used.

See gain.

A propeller that can have the pitch of its blade changed to reduce drag when not in use.

The measuring, transmitting, receiving, and indicating apparatus for obtaining the value of a quantity at a distance.

National Pollution Funds Center.

A pointed device which indicates the amount of resistance encountered when it is forced into a material such as snow or soil. See ram penetrometer.

Revolutions per Minute