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The raised surface operating control station of a submarine. A protective armour plated control station.



Related Terms

OVERFLOW PIPE

Open pipe protruding above the surface of a liquid in a container, such as a distillation or absorption column or a toilet tank, to control the height of the liquid; excess liquid enters the pipe's open end and drains away.

COMPARISON OF SIMULTANEOUS OBSERVATIONS

A reduction process in which a short series of tide or tidal current observations at any place is compared with simultaneous observations at a control station where tidal or tidal current constants have previously been deter- mined from a long series of observations. For tides, it is usually used to adjust constants from a subordinate station to the equivalent of that which would be obtained from a 19-year series.

OPERATING AREA CHART

A base chart with overprints of various operating areas necessary to control fleet exercise activities. Submarine Transit Lanes, Surface and Sub-surface Operating Areas, Air Space Warning Areas, Controlled Air Spaces, and other restricted areas are portrayed.

OPERATING CONTROL

A control to start and stop the burner; it must be set below the high limit control.

FLYING BRIDGE

A control station on top of a deckhouse that providing high visibility for the helmsman.

ROUND TURN

Winding a line completely around an object to spread the pull of a rope across a larger surface area and enable greater control without jamming.

CONTROL CURRENT STATION

A current station at which continuous velocity observations have been made over a minimum of 29 days. Its purpose is to provide data for computing accepted values of the harmonic and nonharmonic constants essential to tidal current pre- dictions and circulatory studies. The data series from this station serves as the control for the reduction of relatively short series from subordinate current stations through the method of comparison of simultaneous observations.

DATA-ACQUISITION STATION

A ground station used for performing the various functions necessary to control satellite operations and to obtain data from the satellite

MEAN HIGHER HIGH WATER

A tidal datum that is the average of the highest high water height of each tidal day observed over the National Tidal Datum Epoch. For stations with shorter series, simultaneous obser- vational comparisons are made with a control tide station in order to derive the equivalent of a l9-year datum.

CORRECTED CURRENT

A relatively short series of current observations from a subordinate station to which a factor is applied to adjust the current to a more representative value, based on a relatively long series from a nearby control station.

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