The bigger they are causes more water resistance when towing them, but would further dampen the roll. like everything else on a boat, it's a trade-off.
The bigger they are causes more water resistance when towing them, but would further dampen the roll. like everything else on a boat, it's a trade-off.
The dimensions of my "towed bodies" are 14" long by 22" wide, not including the "proboscis" of the weight. I measured the the fish of another vessel and they were 18" long by 27" wide, considerably larger. How large are yours Larry? Should I go larger, as I still have some roll in beam seas?...
Thanks Larry. I calculate the area of my fish as 0.5 X 14 X 22 = 154 sq in. Your current fish are 294 sq in, so almost twice as large. I have 5 holes to adjust the tilt. Currently I have them on the centre hole...
Has anyone try building parvanes with a reversed hydrofoil?
... And paravanes just aren't practical for shallow water running like the ICW. And then there's the bridge thing...
Has anyone try building parvanes with a reversed hydrofoil?
The last 2 pictures are when the plywood failed after 4 years and ~8K miles. The fish spend a lot of time in the water when we use the paravanes as rocker stoppers when anchored so no real surprise.
I'm really impressed that they lasted that long. I don't know why, but I would never have thought to make them out of plywood. I just assumed they were all steel or alumin(i)um. Did the fish split suddenly and violently, or did it slowly crack over time?
when you lost one did the boat roll differently or dangerous?