GEOLOG SPEED AND DISTANCE SYSTEM

GEOLOG  is a satellite based system. The ship's speed, ground referenced, is displayed with an typical accuracy of 0.03 knot.

GEOLOG meets the IMO requirement for a ship's SPEED and DISTANCE instrument, as accepted by the USCG and an increasing number of countries. 

It comes with the navigator's (horizontal) display below, and gives you;

Fore and aft ground speed.
Athwartships ground speed. (If enabled for display. See below.)
COG, SOG and relative motion
Distances run
Position,  (+/-16m 2drms)
No, it does not use differential
NMEA 0183 output for radar & ecdis
200 pulses per mile ground speed ahead. (In direction of the bow.)
Heading and ROT indicator. KW991

This picture show the "Navigator's" SMIDS display on passage to St Lucia in a moderate sea with a leeway of about 0.65 knots due to the current. The bow athwart ships speed is not available on Geolog, only on SMIDS. The IMO rule (A.824(19)2.6) incredibly says that the athwart ground speed should not be displayed, so this is enabled and disabled by switch inside the display unit. 

ADVANTAGES AND DISADVANTAGE

No tanks or gate valves
No sea trials or calibration required. Speed is good enough for speed trials.
Unaffected by turbulence, propeller wash, boundary layer.
TRACK RECORD. SMIDS/GEOLOG has been in service since March 1997.
Can not measure water speed.

TYPICAL INSTALLATIONS: Here is a typical parts list for a GEOLOG fit.SMIDS MAIN UNIT

Sensor enclosure 260 x 160 x 90mm plus antenna.
Main unit 400 x 500 x 150 electrical enclosure on bridge.
KW991 heading repeater. 
KW992 horizontal "navigator's" display for chart table.
The display units are not suitable for permanent outside use without special precautions.

 

 

PDF Download SMIDS/GEOLOG data sheet.

Open web site at the start

ADITEL MARINE ELECTRONICS 

UK

Tel / fax 44 (0) 1873 840405
Fax: 44 (0) 1873 840106
AMI 44 (0) 2380 480450
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