Multibeam echo sounders of the Thalassa
Le Thalassa is fitted with 3 multibeam echo sounders: for shallow water (depth 8000m) and for fishery.
Multibeam echo sounders | EM2040 | EM304 | ME70
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| Standard | Bathymetric option |
Manufacturer | Kongsberg | Kongsberg | Kongsberg | |
Frequency | 200-400 kHz | 30 kHz | 70-120 kHz | 90 kHz |
Max depth | 400 m | 8000 m | 250 m | 800 m |
Rx beams | 256 (400 HD mode) | 512 (800 HD mode) | 21 | 81 (200 HD mode) |
Beams resolution | 400 kHz : 0.4 x 0.75° 300 kHz : 0.5 x 1° 200 kHz : 1 x 1.5° |
| 3 x 3° | |
Swath width | 140° (800 m to 200 kHz) | 140° (5.5x water depth) (9 km max.) | 90° | 120° (3.5x water depth) |