When a keel this deep, with this small a bearing surface, is mated to a high-tech cored hull and the boat then hits something hard, the results are not pretty. You can see the scope of the repair by the discoloured area in the top photo. A repair that cost over a hundred thousand dollars because the entire structural grid was separated from the hull and much of the interior cabinetry had to be removed to reattach it.
In Part 1 we looked at the impact resistance of several common boat building materials. Now, in this post, we will examine what happens in a grounding or collision and what proper design can do to ameliorate the damage.
Matt, Engineering Correspondent, is a Professional Engineer and true renaissance man, with a wide range of expertise including photography and all things boat design. He has a unique ability to make complex subjects easy to understand and he keeps an eye on the rest of us to make sure that we don’t make any technical mistakes. Working as M. B. Marsh Marine Design, Matt designs innovative powerboats of all shapes and sizes.
Nothing on this website or in direct communications received from us, or in our articles in the media, should be construed to mean or imply that offshore voyaging is anything other than potentially hazardous. Dangers such as, but not limited to, extreme weather, cold, ice, lack of help or assistance, gear failure, grounding, and falling overboard could injure or kill you and wreck your boat.
Decisions such as, but not limited to, heading offshore, where you go, and how you equip your boat, are yours and yours alone. The information on this web site is based on what has worked for the authors in the past, but that does not mean it will work for you, or that it is the best, or even a good way for you to do things.