: He probably is referring to the trouble
: they've had finding ships above water.
: Though the ships sunk years ago aren't
: moving around.
: --Previous Message--
: How you would use navigation training to
: the wrecks? For this specialised ROVs are
: needed and ships, which can deploy those.
: I would also expect the echosounder on
: Petrel to be superior to detect wrecks
: compared to a anti-submarine sonar.