A little over a week ago, we posted about a 90′ yacht, valued at around $10 million, which capsized and sank on her launching in Anacortes, Washington. Since then there has been no definitive determination as to what caused the boat to capsize as she hit the water, but there are two primary theories. The first is that are that the boat had inadequate stability because the center of gravity was too high, either due to inadequate ballast or the incomplete installation of machinery. The second theory is that the boat was improperly blocked on the dolly or that the dolly partially slipped off the launching ramp. A problem with the dolly could have the effect of causing the ship to be help up by her bow and stern while not having enough of the midship of the boat in the water to support it hydro-statically.
The first presumption is supported by Aaron Pufal, a former yard project manager . As reported by Three Sheets Northwest: