39-meter "My Saga" Sinks Off Italy

Pascal, it sank in 500m of water, hardly worth recovery from that depth.

Taking power off of the shell door hydraulics sounds like a simple solution underway but the reality is the door seals leak, and it doesn't matter if the door seals are pneumatic or fixed, they all seem to leak a bit and they all have sumps under them to contain and dewater. I've found this to be the case on the best of builds. Now if you have a scenario where a door sump alarm and pump aren't functioning, and nobody is laying eyes on the sump during watch cycles than this could lead to major problems and is a likely scenario on some builds of varying quality. Shell doors are manufactured by specialty companies as sub assembly's and are installed by the builders with varying degrees of alarms and manual backup systems all dictated by the classification societies with limited continuity between the societies concerning these shell doors be it ABS, RINA or others. I've never had a shell door malfunction to the point of opening or unlatching whilst underway and with the layered interlock mechanisms and alarms that make this situation improbable but as we've all seen from pictures and videos not totally impossible. Guaranteed that after this rash of possible door failures the last year or so all the responsible parties be it manufacturers and class societies are studying this closely and will be issuing new oversight and rules governing these doors.

Some extra details (insofar as I understand Google translator's efforts with Italian). The vessel was less than 9 miles offshore when she began taking on water at the stern in the afternoon. The Saga radioed for assistance and the Coast guard arrived promptly and removed 4 passengers and 1 crew member and called for a tug. The captain and 3 crew members stayed on board to await the tug . The tug did not arrive until late the next morning by which time the Saga had taken on so much water she was listing badly and was untowable. The tug rescued the crew. The Saga sank in the early afternoon. Two investigations are underway. Why was the Saga taking on water? and Why was the tug so slow in arriving?

https://www.yachtforums.com/threads/45-meter-benetti-yacht-domani-floundering.36099/