Went to the Miramar air show today (Top Gun fame) and had a surprise to find a couple of RIBS exhibited. Well almost!
The Coast Guard boat uses a solid foam flotation collar,so not really a RIB.
However the Navy boat uses collars by Wing which are a hybrid. They use a Polyethylene foam collar with an inner air bladder to absorb the shock.
http://www.wing.com/foam_collars.html
The Coast Guard vessel is made by Safe Boats and was a 25' with a top speed of 40 knots with 2x 225 outboards.
The Navy boat is made by Dauntless and was the 34' Ram model.
This was especially interesting as it displayed all the Tech ;info and specs as well as the actual crew to answer questions.Uses a twin stern drive setup that gives it a top speed of about 34 knots.
They had recently taken delivery of these new boats having been in the Persian Gulf with a smaller craft earlier in the year.
cheers Dal