Raymarine ST60 Specifications download pdf (Page 46)

34 ST60+ Tridata Instrument Owner’s Handbook

Set speed resolution

Select resolution of either 0.01 or 0.1 as required.

Set log units

Select either NM (nautical miles), SM (statute miles) or KM (kilometres), as

required.

Setting the correct speed

Set the displayed (current) speed using one of the following methods:

• If SOG is available from SeaTalk, use the Adjust to SOG screen to automati-

cally set the current speed to. You must be running in slack tide conditions to

successfully use this method.

• Manually apply a calibration factor by means of the Cal factor adjust screen,

to set the displayed speed value to your best estimate of the vessel’s speed.

If neither of the above methods is suitable, use the

Speed calibration

procedure

described under

Intermediate calibration

to carry out a speed calibration run over

a measured distance. This enables the instrument to calculate the correct

calibration factor.

Adjust to SOG

The Adjust to SOG screen is displayed only if SOG data is available from SeaTalk.

The current SOG is displayed in the bottom section of the display (SG12.8 in the

illustration), and the current speed registered by the instrument, as large figures

in the middle section of the display (12.3 in the illustration).

It is recommended that, if you are running in slack tide conditions, you press the

reset button for 3 seconds, to accept the SOG as the current speed.

If you do not wish to accept SOG as the current speed, press the

trip and reset

buttons together to select the Cal factor adjust display.

Cal factor adjust

The Cal factor adjust screen enables you to manually adjust the calibration factor.

It shows the current calibration factor in the bottom section of the display (CF

1.00 in the illustration), and the current speed as large figures (12.3 in the

illustration).

Use the

trip or reset button to adjust the calibration factor so that the current

speed is the speed through the water.

If SOG data is available from SeaTalk, you can turn to the Adjust to SOG screen by

pressing the

trip and reset button s.

Note:

If neither of the above methods gives satisfactory results, carry out the Speed cali-

bration procedure (part of Intermediate calibration).

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Raymarine ST60 Specifications Page 46

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