Typhoon Cavitating

Im gonna show my ignorance now, whats cavitating exactly?

Cavitating is the term used when (in this case) a submarine bends on power to the propellers. The propellers turn faster digging into the water creating bubbles and "holes" in the water. Also, creating mechanical transient sounds. It is this cavitation that makes the submarine vulnerable to sonar - thus negating its usefulness. Here tho' the vessel is moving out from its base - very shallow water - no problems with detection. Hope that helps

sure does help, cheers mate

AAAWWW The bad ol'days, nice shot!