Water Activated Missiles? [VIDEO]

A new naval weapon has attracted hundreds of thousands of views on Youtube and left most people scratching their heads… is this thing real, or is the whole video a hoax?

Why in the world would you launch a missile by first dunking it in the ocean first?

The only thing I can think of would be to eliminate the hazard of the exhaust gases burning up the ship, which would pretty much allow you to fire this thing from almost anywhere.  Perhaps you could even install this system on Zodiac or small boat?

Hmm…