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Comment: Automatically updated by Sensor2Confluence-Transporter (polarstern@binf02p165)
Note
titleAttention:

The EM-Log is operated by ship's command only.

Summary

Sensorweb integration
urnvessel:polarstern:em-log
contenttypeSummary

The electromagnetic log measures the speed of the vessel through water.

Sensorweb integration
urnvessel:polarstern:em-log
contenttypeMetadata
ManufacturerSAGEM
ModelLHS
Serial No.n/a
Typespeed log
Sensorweb integration
urnvessel:polarstern:em-log
contenttypeImages

Contacts

Sensorweb integration
urnvessel:polarstern:em-log
contenttypeContacts
Name Institution Role
Reederei LaeiszReederei LaeiszEngineer In Charge

Components

Metadata (Metadata Plugin)
0Components
The system consists of the EM Log transducer located in box keel, the EM Log electronics box (G707) and the EM Log display on the bridge.

Position

Sensorweb integration
urnvessel:polarstern:em-log
contenttypeLocalFrame
Origin Description:xyz-position of transducer from Alignment Survey Report RV Polarstern (June 2016), transducer located in box keel, electronics located on G-deck room G707, display located on bridge
X:78.99 m
(X-0 is at the center of der rudder (ref. design drawing of the vessel), positive X-axis is forward and along vessel centerline)
Y:-0.502 m
(Y-0 at centerline, positive Y-axis is portside)
Z:0.022 m
(Z-0 is set to the lowest point of the keel, positive Z-axis is upwards)

Data logging, storage and archiving

Logged parameters

Sensorweb integration
urnvessel:polarstern:em-log
contenttypeParameters
Parameter Sensor Output Type Unit
speedspeedknots

Central geographical ship's position and time standard

Metadata (Metadata Plugin)
0timestandard
Time synchronising via DShip.
Geographical ship's position via DShip.

Rawdata storage on board

Metadata (Metadata Plugin)
0Rawdata
Data storage in DShip system.

Dship

Metadata (Metadata Plugin)
0DShip
 Uncorrected measurement data.
Metadata list
|| Device name | EM-Log || 
|| Parameters | speed \[kn\] ||

Data archiving on land

Metadata (Metadata Plugin)
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 ||