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An approximate method of calculating a vessels GM. GM in mtrs = ((F x breadth)x(F x breadth)) Time in secs F = 0.78 - 0.98 dependant on hull shape.



Related Terms

DIFFERENTIAL PIECE-RATE SYSTEM

A wage plan based on a standard task time whereby the worker receives increased or decreased piece rates as his or her production varies from that expected for the standard time. following pressure reduction. differential steam calorimeter

FAIRING

The process of bevelling the stem, chine, sheers, keel, and frames so that the planking will have flat surfaces to glue and fasten to. A fair hull is one with no dips or bumps in the longitudinal lines of the hull. Fairness is checked by sighting down the longitudinal lines.

TIME CHARTER

Hire for a period of time

ETR

Expected time of return.

DISCOUNTED DRAFT

A time draft under a letter of credit that has been accepted and purchased by a bank at a discount.

NAVSTAR GLOBAL POSITIONING SYSTEM

A satellite navigation system developed by the Department of Defense. The system is provides highly accurate position and velocity information in three dimen- sions and precise time and time interval on a global basis continuously, to an unlimited number of users. It is unaffected by weather and provides a worldwide common grid reference system. The objective of the program is to provide very precise position information for a wide spectrum of military missions. In addition, current policy calls for civil availability with a slight degradation in system accuracy required to protect U.S. national security interests.

ON-STREAM TIME

In plant or process operations, the actual time that a unit is operating and producing product.

V BOTTOM

A hull with the bottom section in the shape of a 'V'.

TA

Time of Arrival

DUTY CYCLE

An expression of the fraction of the total time of pulse radar that radio-frequency energy is radiated. It is the ratio of pulse length to pulse repetition time.

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