John, I was in Ketchikan the day Hayden Bay sank last summer. It was on June 16 and it was being delivered by a 32 year tugboat skipper who struck a charted reef as he left a bay just south of Ketchikan at 5:30 am. The reef rolled the boat over far enough that water flowed over the rail and filling the interior of the boat until it sank. While I'm sure the there was substantial damage to the keel and the fin, The Nordhavn was strong enough that there were no holes in the hull. The sinking happened when the shelf rolled the boat over far enough to take on water over the gunnel to flood the boat. In this particular case, a steel strip would not have prevented the sinking. Fortunately, no one was hurt. Phil Eslinger