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titleAttention:

The Doppler Log (DO-Log) is part of nautical equipment. The operation belongs to the bridge only.

The new DO-Log system was installed in December 2017.

Summary

Transducer Frequency:

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0Frequency
270 kHz

Contacts

Components

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0Components
The system consists of two transducer elements installed in the ship's keel. The transducers can alternatively be used, e.g. one is backup. Electronic cabinet is mounted in Gravitymeter Room F-632. Hydroacoustic frequency amounts to 270 kHz. Transducer 1 S/N: 17889; Transducer 2 S/N: 17895.

Subdevices

Position

Data logging, storage and archiving

Logged parameters

Central geographical ship's position and time standard

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0timestandard
Time synchronising is regulated by DShip.
Geographical ship's position is provided by DShip.

Rawdata storage on board

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0Rawdata
Data storage in DShip system.

Dship

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0DShip
Uncorrected measurement data.
Metadata list
|| Device name | DO-Log || 
|| Parameters| speed bottomtrack across \[kn\]; speed bottomtrack ahead \[kn\]; speed watertrack across \[kn\]; speed watertrack ahead \[kn\] ||

Data archiving on land

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0DataOnLand
After the cruise the DShip data set can be extracted from https://dms.awi.de.
Metadata list
|| File format(s) | *.txt || 
|| Calibration certificates | NO ||

Documentation

Events