.......... the South Coast that was berthed close to me had sunk under just five inches of snow. It's still sitting on the bottom.
One question that I'd ask would be, did the snow sink the boat OR was there some other contributing factor such as clogged scuppers and a waterlogged cabin/cockpit or possibly some sort of leak in the hull? Perhaps the the accumulated weight of years of a for sale sign on the owner?
I just read on another form an account of a C 27 owner in Maryland area who said that the snowfall that was in the 17" to 24" amount back in early Feb. lowered his boat about 3" in the water. He also reported that a few boats in the immediate area had sunk.
If one were to estimate the weight of 5" of snow at about 10 lbs. -This a slightly on the wet side estimate because and a loose estimate of about 77 sq ft of surface area for a Catalina 22. Then this would put the approximate weight of 5" of snow blanketing this type of boat at ~770 lbs. The displacement of a Catalina is about
1943 lbs. - 2643 lbs.. I've hauled 6 adults, two children, and two dogs....about 1200-1500 pounds of passengers at one time without sinking the boat.