Are trying to kill Tsunami survivors with this "Irish" overturned vessel story. Keep the colour please, nobody is looking for you but us, too busy. Practice overturning please, first in a pool then on a tide. Use oxygen & develop a technique. I suggest a kit net & even distribution of weight. I don't think it 's probable.
https://www.msn.com/en-gb/travel/article/lost-us-navy-boat-found-in-ireland-year-later/vi-AAGUk3N?ocid=spartanntp