Tragic, so two confirmed dead and one still missing. The Goldfish RIBs are top-of-the range and capable of 55 knots+. I still find it incredible that people refuse to wear lifejackets. I'm not saying in this instance it would necessarily have saved their lives, but if you're thrown from a boat, knock your head, or even the impact of hitting the water at speed, then you stand a better chance of survival. I see there's discussion regards possible speed limit here:
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We had a boating accident on the NE coast a matter of weeks ago. Set out to go fishing at night, without an engine, and no lifejackets.
BBC News - Body identified as missing boat teenager Jake Miller