I recently tuned into the US Coast Guard Channel. There you will find lots of video resources that helps to show what goes on within the busy world of the US Coast Guard.
One quick video posted
below gives a great demonstration of their new 47' MLB. This boat is
specifically designed for rescue in large surf.
The official Coast
Guard website describes them as:
47' motor lifeboat is designed as a first response rescue resource in high
seas, surf & heavy weather environments. They are built to withstand the
most severe conditions at sea and are capable of effecting a rescue at sea even
under the most difficult circumstances. They are self-bailing, self-righting,
almost unsinkable, and have a long cruising radius for their size. It is the
replacement for the aging 44' MLB fleet.
More info: www.uscg.mil