The orange magnetometer tow fish (above) and the side scan sonar tow fish (below).
Magnetometer and Sonar
Image courtesy of the Search for the Lost French Fleet of 1565. Download larger version (jpg, 2.9 MB).

The orange magnetometer tow fish (above) and the side scan sonar tow fish (below) with their bundled tow-cables that carry power and data between the instruments and computers on the boat.

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