2-1
2.0 MECHANICAL INTERFACE
Typically, the magnetometer manufacturer will provide a tow cable 10m long with a mechanical
termination to connect to the side scan tow arm. EdgeTech provides a custom tow point key for each
magnetometer. The tow key is attached to the side scan tow arm through a sacrificial shear pin. If the side
scan impacts, then the key shears from the tow arm, the magnetometer stays attached to the key and
tow cable, and the fish is retrieved from the tail by the Safe-T-link. The Magnetometer connects to the
breakaway key using a clevis pin that allows swivel action but does not allow the Magnetometer to rotate.
The Magnetometer is lighter than the side scan and will tow aft and above the side scan.
Figure 2-1: Connection Key for Marine Magnetic SeaSPY Magnetometer
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