Originally Posted by LIboater
On my 34 ft SR there are metal tabs along the gunwhale indicating where the slings should be placed for a haul out
. I must assume that the point that marks the center point between these 2 tabs is the CoM or very close because you want the boat as perfectly balanced as possible when you haul it out. However, the center point between these sling tab markers is nowhere near the observed pivot point of the boat. Granted drag might affect that, but it is hard to think it makes that great a difference.
Whoa! might be being pedantic but the assumption that markings for the slings are a guide to CoM is way off. Placement of slings is dictated by the architecture of the hull
- balance is a minor consideration at best, as long as each slings is somewhere in the vicinity of each end of the boat they will work. Its much more important to avoid placing them at the extremities of fins, keels, skegs, props, rudders, steep slopes, sensors or other protrusions etc., etc.