Santa Barbara urchin dive boats...
I've worked on both of these boats way back in the day....mostly on the boat at the rear...top catch, over 6500lbs...that was a lot for that boat.
<a href="https://www.youtube.com/watch?v=0cqX-03fXoc" rel="noreferrer nofollow">www.youtube.com/watch?v=0cqX-03fXoc</a>

I worked that job for 14 years, and it wasn't always calm like you see in the video....some days you would get turned upside down on a regular basis just trying to stay in the same spot (big ocean swells go all the way to the bottom)...no wonder I'm feeling old...haha!!