| Note |
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The EM Log is part of nautical equipment. The operation belongs to the bridge only. |
Summary
| Sensorweb integration |
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| urn | vessel:heincke:em-log |
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| contenttype | Summary |
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The electromagnetic log measures the speed of the vessel through water. Display type: NAVIKNOT 350E vessel:heincke:em-log (1619) |
| Sensorweb integration |
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| urn | vessel:heincke:em-log |
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| contenttype | Metadata |
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| Manufacturer | Northrop Grumman |
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| Model | Sperry Marine, Type 2829-2100-00, REV: C, STO No 073266 |
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| Serial No. | 1407-0260 |
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| Type | speed log |
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| Sensorweb integration |
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| urn | vessel:heincke:em-log |
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| contenttype | Images |
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| Sensorweb integration |
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| urn | vessel:heincke:em-log |
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| contenttype | Contacts |
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| Name | Institution | Role |
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| Reederei Briese | Reederei Briese | Engineer In Charge |
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Components
The system consists of the EM Log transducer located in the keel and an operational unit on the bridge deck.
| Sensorweb integration |
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| urn | vessel:heincke:em-log |
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| contenttype | Subdevices |
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No subdevices available. |
Position
| Sensorweb integration |
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| urn | vessel:heincke:em-log |
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| contenttype | LocalFrame |
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| Info | xyz-position of transducer from Alignment Survey Report RV Heincke (January 2016). Electronics and operation on bridge deck. | | X | 45.564 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.) |
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Data logging, storage and archiving
Logged parameters
| Sensorweb integration |
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| urn | vessel:heincke:em-log |
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| contenttype | Parameters |
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| Parameter | Sensor Output Type | Unit |
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| longitudinal water speed | speed | knots | | longitudinal ground speed | speed | knots |
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Central geographical ship's position and time standard
| Metadata (Metadata Plugin) |
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Time synchronization and geographical positioning is done by DShip receiving the data for logging. |
Rawdata storage on board
| Metadata (Metadata Plugin) |
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Data storage in DShip system.
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DShip
| Metadata (Metadata Plugin) |
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Uncorrected measurement data. |
| Metadata list |
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|| Device name | EM Log ||
|| Parameters| Longitudinal ground speed \[kn\]; Longitudinal water speed \[kn\] || |
Data archiving on land
| Metadata (Metadata Plugin) |
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After the cruise the DShip data set can be extracted from https://dms.awi.de.
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Documentation
| Sensorweb integration |
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| urn | vessel:heincke:em-log |
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| contenttype | Resources |
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