Interesting to watch.
Chopper circles to get to his target in the upwind position and crabs up to the upturned boat because the pilot (unlike a fixed wing) sits on the starboard side of the aircraft and he can keep a better visual on the boat.
If the weather
is bad and there is a lot of spray or horizontal water they can reverse the approach so that the crew chief has eyes on the target, and as he has a vertical view via the port side door he can better monitor
the height from the water which is more difficult to assess from the pilots position. Some operators used to operate that way all the time having both a crew chief, a winch
man and a diver; but it makes the machine more tender
for the pilot to control having the door open on the windward side.
Chopper comes down to about two rotor spans to release the diver which reduce water impact and is far enough from the wreck not to add to the calamity. The diver out he climbs to 3 rotor spans and starts to move in a clockwise circle because a helo is somewhat at risk in the hover position and in low wind
speeds is near max power.
Once moving they gain translative lift
across the rotor disk and substantially reduce power which is always safer.The pilot maintains visual on the target circling the boat in a clockwise pattern while the diver gets everyone organised for boat to boat retrieval and the aircrew help the rescue craft approach the wreck.