I was going to joke that the "USN style" clearing turns are more about looking good than getting out of the way...but then I thought you'd all prefer to know that if you do find yourself in the water just off the front of a speeding tonnage of metal, even small boats of around 20,000 tons appear to be incredibly big...and slow boats only capable of just over 20 knots get closer really quickly
...and when the trusty jet, the one you were sitting in on the flight deck a few moments ago, gets hit by the said "small" boat, the gap between you and the huge object bearing down on you at great speed becomes tiny because it is filled with another relatively large (compared to your pink body) object now also coming towards you at the same speed as Mum...
It's okay!!! Everything will be alright provided you can just swim backwards fast enough and get your parachute off with the Koch fittings carefully covered and blocked under the over inflated mae west.
If you can't get your parachute off it'll be okay if it doesn't get tangled up with the sinking aeroplane, or get caught up in underwater turbulence associated with big ships travelling at speed.
If you do become entangled with the sinking aeroplane, or the turbulence associated with big ships travelling at speed, it'll be okay if you can just breathe the emergency oxygen whilst you go down with the aeroplane.
If your emergency oxygen supply is stopped by the anti-drown valve kicking in it'll be okay because by some fluke of training you got the life raft deployed in the few instants before you hit the water and that caught you at a depth of 15' and wouldn't let you go down any further...It's also fairly important that the Ship's Navigator crashed stopped the engines so those 4 big screws weren't sucking things in and chewing them up as you went by the back of the boat.
Yeah...if you are flying and can do a clearing turn off the cat it's a good idea!
