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Originally Posted by Sdiver
But being by the bottom is the best.
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Underwater infiltration has been covered in the SFUWO thread. Underwater operations are mainly conducted at night because you have to be dropped off by some type of transport. Night allows the transport to bring you in close enough to complete the infiltration underwater.
Night distance swims under water are all characterized by the same thing "You can't see shit" not even your buddy. You have to depend on your compass and swim out the timed course. The east coast and gulf area allow most divers to hug the bottom but that does not work on a lot of islands in out of the way places. Also the deaper you go the more air you use per breath. Shallow = longer range.
Now we can get into harbor operations where we need kick counts, a multi legged course planned with more care than the D-day operation, stop watches and a whole lot more but I'll let the Navy keep that and I'll stick with my day job.
That's why guys like Terry and me say let the SEALS keep it.
But even in civilian diving a diver must be aware of currents and how fast they run or have a real good safty plan. Getting down current from your boat can get you in deep trouble in more ways than one.
Just thinking off the top of my head here.
Pete