Recently had a bit of a performance problem. Left the fuel dock where we spent the night and headed out. Things just were not right. Kind of felt like I was on a pregnant pig! Got back to the dock, called a diver... No idea how I picked this up. Running off shore. Into a short fairly deep inlet to the fuel dock. Running great coming in, not sure if this drifted up behind me during the night with the current, then maybe I sucked it up in the prop backing away from dock. Yes, it was a performance impact.....
I remember picking up a rug at a fuel dock. When I pulled it off, some ole lady was chasing me down for it back. I was hot enough already and she wanted her dock rug back.
The same thing happened to me a few years ago in my Nordhavn about 45 miles off Shinnecock around dusk. I had a professional diver on board but no tanks. $7,500 tow, and two tanks with a professional diver later we resumed our trip to Maine.
I ve picked up a lot of stuff over the years, the worst being a cubic foot block of concrete with rebar and metal conduit sticking out. I was about to backinto our slip while someone one prop caught some electric wire and brought the whole thing up with a bang. Finished backing in on one engine. No damage.
I've been fortunate thus far but we have a lot of nets, crab and shrimp pots, etc. I put line cutters on a few years ago just in case. Hope they work if I ever need them.
I have a video that the diver took. Couldn't post it due to the size of the file. Not sure if net cutters would have helped in this situation. Maybe they would have.
Impossible to say. You are seeing the end result. Perhaps a line cutter would have done the job at first contact before all the net spooled on? I think that's about the best you could hope for in this situation. This is also why I carry a wetsuit and mask aboard in case we have this situation and have to deal with it. In my area, help can be a long ways away.
We also keep a wetsuit and mask as well as a 110v hookah system with a 75' hose so we can stay down long enough to do the job . We also use it for bottom and underwater gear cleaning.