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A device that continuously indicates the dead reckoning position of a vessel. It may also provide, on a dead reckoning tracer, a graphical record of the dead reckoning



Related Terms

DIAL FEED

A device that rotates workpieces into position successively so they can be acted on by a machine.

CAGING MECHANISM

A device for erecting a gyroscope or locking it in position

MICROPHONE TRANSDUCER

[ENG ACOUS] A device which converts variation in the position or velocity of some body into corresponding variations of some electrical quantity, in a microphone.

BAR SUPPORT

A device used to support or hold steel reinforcing bars in proper position before or during the placement of concrete. Also known as bar chair.

EPIRB

Emergency Position Indicating Radio Beacon a device that transmits distress alerting signals via satellites (406 MHz using COSPAS-SARSAT, 1 6 GHz using INMARSAT) and aircraft homing signals on 121 5 MHz

ASTROGRAPH

A device for projecting a set of precomputed altitude curves onto a chart or plotting sheet, the curves moving with time such that if they are properly adjusted, they will remain in the correct position on the chart or plotting sheet.

CONCRETE PUMP

A device which drives concrete to the placing position through a pipeline of 6-inch (15-centimeter) diameter or more, using a special type of reciprocating pump.

CHART COMPARISON UNIT

An optical device used to superimpose the plan position indicator radar picture on a navigational chart.

DRILL JIG

A device fastened to the work in repetition drilling to position and guide the drill.

ELECTRONIC POSITION INDICATING RADIO BEACON

(EPIRB) - a buoy type device used for man overboard and in liferafts and lifeboats to send a signal to a satellite system that relays the position of the person(s) in distress to effect their rescue.

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