It appears that Special forces command has got DARPA looking at very high speed insertion of special forces personnel.

By fast, we mean more than 100 knots, using a supercavitating technology.

I see two problems:

• This would necessarily be VERY noisy.
• “Center Punching a Whale at 100 kts” as the author of this post put it.

Actually, at those speeds, I’d be worried about a halibut.