Attention:

The EM Log is part of nautical equipment. The operation belongs to the bridge only.

Summary

The electromagnetic log measures the speed of the vessel through water. Display type: NAVIKNOT 350E


Manufacturer Northrop Grumman
Model Sperry Marine, Type 2829-2100-00, REV: C, STO No 073266
Serial No. 1407-0260
Type speed log
REGISTRY-Link ↪ REGISTRY (8570)

Contacts

Name Institution Role
Reederei Briese Briese Schiffahrts GmbH & Co. KG Engineer In Charge

Components

The system consists of the EM Log transducer located in the keel and an operational unit on the bridge deck. No subdevices available.

Position

Infoxyz-position of transducer from Alignment Survey Report RV Heincke (January 2016). Electronics and operation on bridge deck.
X45.564 m
Positive X axis is forward and along the centerline of the vessel with X0 at the Stern point of the vessel.
Y-0.25 m
Positive Y axis is portside of centerline with Y0 at centerline at the Very stern point of the vessel.
Z-0.087 m
Positive Z axis is upwards of basis. Z0 is set to the hydrophone on midship.

Data logging, storage and archiving

Logged parameters

Parameter O2ARegistry Output Type Unit
longitudinal water speed speed knot
longitudinal ground speed speed knot

Central geographical ship's position and time standard

Time synchronization and geographical positioning is done by DShip receiving the data for logging.

Rawdata storage on board

Data storage in DShip system.

DShip

Uncorrected measurement data.

Device name

EM Log

Parameters

Longitudinal ground speed (kn)
Longitudinal water speed (kn)

Data archiving on land

After the cruise the DShip data set can be extracted from https://dms.awi.de.

Documentation