| Note |
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Please note that operations of the Fishnet Echo Sounders requires experienced scientific staff on board and can only be operated upon request. The system is not operated by the ship's crew. Request operations with the Fishnet Echo Sounders to AWI-Logistics in sufficient time prior to the cruise and clarify the data transfer after the cruise. |
Summary
| Sensorweb integration |
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| urn | vessel:heincke:net_sounders |
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| contenttype | Summary |
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The net echo sounders are used for information about the status of fishnets deployed in the water. Information about depth of the net, distance to seabed and amount of fish coming in are provided. Small sensors are attached to the trawl and deliver data to the ship where they are received by hydrophones. |
| Sensorweb integration |
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| urn | vessel:heincke:net_sounders |
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| contenttype | Metadata |
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| Manufacturer | Scanmar |
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| Model | SS4-VTL, Minitransponder MTR-144 |
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| Serial No. | n/a |
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| Type | echo sounder |
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| Sensorweb integration |
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| urn | vessel:heincke:net_sounders |
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| contenttype | Images |
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Transducer Frequency
40,8 - 44,8 kHz
| Sensorweb integration |
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| urn | vessel:heincke:net_sounders |
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| contenttype | Contacts |
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| Name | Institution | Role |
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| Ralf Krocker | Alfred-Wegener-Institute for Polar and Marine Research | Engineer In Charge |
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Components
The transducer of the Scanmar Fishnet Sounder system and the battery charging equipment are stored in the Umformerraum. Two hydrophones are permanently installed on the hull of the ship. Working places are situated on the bridge and in the Messraum. ScanBas System is installed on the PCs. It analyzes and visualizes the data.
| Sensorweb integration |
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| urn | vessel:heincke:net_sounders |
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| contenttype | Subdevices |
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| Name | Model | Type |
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| hydrophone starbord | | not assigned | | hydrophone portside | | not assigned |
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Position
| Sensorweb integration |
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| urn | vessel:heincke:net_sounders |
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| contenttype | LocalFrame |
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| Origin Description: | no xyz-position given. The devices are stored in the Umformerraum in the forecastle. |
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Data logging, storage and archiving
Logged parameters
| Sensorweb integration |
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| urn | vessel:heincke:net_sounders |
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| contenttype | Parameters |
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| Parameter | Sensor Output Type | Unit |
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| depth of trawl | depth | m |
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Central geographical ship's position and time standard
The Scanmar system receives GPS and time information from the active scientific GPS receiver (usually Trimble) via the the GPS distribution. The data are stored in the NMEA data stream of the Scanmar system.
Rawdata storage on board
The Scanmar data are made available via a terminal server. To access the data use any TCP/IP client program e. g. PuTTY or Hyperterminal. For further instructions see manual "Scanmar_datarecording_FIELAX.pdf". The data recorded from Scanmar is in NMEA format and can be converted using the software KonvScanbas.exe. The Scanmar data are not transferred to DShip.
| root directory | operators choice |
| directory name | operators choice |
| file name | suggested name for NMEA data: Cruise No.-YYYY-MM-DD.txt |
Data archiving on land
After consultation with the data scientist and AWI Logistics the Scanmar data including meta data may be transferred to PANGAEA (https://www.pangaea.de/).
Documentation
| Sensorweb integration |
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| urn | vessel:heincke:net_sounders |
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| contenttype | Resources |
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