I thought you linked up to something like this some time ago. The article mentions the concept coming around in 2005, so maybe you did.

This could definitely suck for those hunting subs in Orions or the like.

There would be a very limited tactical use for this sort of thing IMHO a last resort kind of thing.

Unless your sure your going to hit the airplane (There are countermeasures to defeat the missle after all) and your sure it's alone etc etc it's not a good idea to launch one of these things and localize your area to such a huge extent. An on the ball crew in a P3 could probably be damn close to getting out of range before the missle even broke the surface unless it's a totally noisless launch.

Trying to shoot down a 28 million dollar airplane with a 2.8 Billion dollar submarine isn't really a good thing.

The Germans tried something similar in WWII when they put quad 20mm on their U-Boats. Yes they shot down a few aircraft but they also lost a lot of boats (The AA slowed down thier crash dives and wasn't THAT effective)

It sounds like something to be used when you've already been located and your $2.8B submarine is out of options. Giving a pilot one more thing to worry about has a significant effect on his performance.

I'm agreeing with Bob here. From the sounds of the article, the sub's are stuck in littoral operations anyway which makes them very visible to the ASW folks. If they know they're spotted or about to be spotted, popping one of these up will do some nastiness to the P3 operators. Sure, it might not drop them but we're not always fighting the best equipped militaries in the world. In fact, their maintenance might be subpar and these could be damned effective.