I don't understand why sonor operators suddenly 'switch off'.
Tracking a contact creeping up on me, I ask the sonor man to follow the approaching merchant. He calls out each and every degree change until 42 degrees, then "No sound contact"
WHADDAYAMEAN, NO SOUND CONTACT??? It's there loud and clear about 2km away at 41 degrees... Even on sweep mode, he doesn't reacquire the contact...
Whywhywhy???
