What are the remote-sensing survey intervals?
Blocks determined to have a high probability for containing an historic shipwreck require survey at a 50-meter line spacing. Blocks with a high probability for prehistoric sites require survey at a 300-meter line spacing. Some blocks where our research tells us shipwrecks may exist are too deep for magnetometer survey. In these blocks, a standard 300-meter survey is required using a side-scan sonar.
