quote:
No knife is needed since the entire system is attached to you with a belt, unclip it and you can swim away.
Buzz. A knife is also used on stuff that finds you underwater, as opposed to what you bring along. You might be tempted to go after something and since the water is not clear, you won't know what you get into until it's too late.
We were given a demonstration of what it takes to breath underwater. It's a simple demo that immediately gives you appreciation for the pressures involved when diving, even at shallow depths.
Have a trustworthy

buddy hold one end of a hose above the surface. Dive down with the other in your mouth and see how far down you can still suck wind.
That's why they have regulators, so you can breath. They balance the pressure in your lung cavity with the surrounding water.
As far as attempting to do this yourself Chris, work that out with the insurance company? They may renege on subsequent issues that are related. Get the whole thing surveyed unless you have not contacted them yet in which case why not go for it?
Alignment is managed at the engine and with a laser sight if you have money, or a feeler guage on the mating plates at the tranny output. The spec on that depends. But I think hatteras calls for something under 10 mikes. Basically you look for a consistent thickness of separation around the perimeter of the mating plates. However I have no idea how the strut is brought into alignment without some kind of sight or by use of the shaft itself?
You are also looking at a cutlass bearing.