Posted by Tom W Clark on 09/20/11 - 5:29 PM
#2
I am unaware of any testing as you describe but there is no outboard motor made, of any horsepower, that is heavy enough to actually pull the stern under. The swamped capacity of the 16'-7" Whaler is roughly 2000 pounds.
No matter how much, or how little weigh is on the transom, a Whaler can always be flipped.
Whaler CGP used to publish a maximum transom weight limit for the 17' Guardian/Alert (commercial 16'-7" Whaler). That was 410 pounds. I wouldn't exceed that. The good news is that there are no 90 HP motors anymore that weigh that much, though the Mercury 90 FourStroke is a little too close at 400 pounds.