Attention:
The Doppler Log (DO Log) is part of nautical equipment. The operation belongs to the bridge only.
Summary
The Doppler log measures speed through water by using the Doppler effect of sound signal reflected from the seafloor or from suspended matter in the water column. Wärtsilä SAM 4682 transducer consists of a total of 3 hydro-acoustic elements of 270 kHz.
| Manufacturer | Wärtsila SAM Electronics |
|---|---|
| Model | SAM4682 |
| Serial No. | n/a |
| Type | speed log |
Transducer Frequency:
Contacts
| Role | Name |
|---|---|
| Engineer In Charge | Briese, Reederei |
Components
No subdevices found in sensor.awi.de.
Position
| Origin Description: | xyz-position of transducer from Alignment Survey Report RV Heincke (January 2016). Electronics and operation on bridge deck. |
| X: | 47.221 m (Positive X axis is forward and along the centerline of the vessel with X0 at the Stern point of the vessel. ) |
| Y: | 0.017 m ( Positive Y axis is portside of centerline with Y0 at centerline at the Very stern point of the vessel. ) |
| Z: | 0.074 m (Positive Z axis is upwards of basis. Z0 is set to the hydrophone on midship.) |
Data logging, storage and archiving
Logged parameters
| Parameter | Sensor Output Type | Units | MeasurementProperties |
|---|---|---|---|
| longitudinal ground speed | speed | knots | |
| longitudinal water speed | speed | knots | |
| transverse water speed | speed | knots | |
| transverse ground speed | speed | knots |