Sounds like they anticipated the frontal passage but did they put the seal up the companionway?? Did the boat actually turn turtle or heel so far over that the boat flooded through the companionway?? Boat looks like one of the ultra light rule beaters with rail meat wings. Those side appendages can't do anything for sailing performance when the boat is laid over to 90 degrees. Hopefully this is not one of those designs with negative stability at extreme angles of heel. Thought the Fastnet Race disaster cured the world of those designs.