This has happened the last 3 times i have played the game. I have dived and once i reach 100 m everything is detroyed. A long list of things, flooding, batterie, diesel engines, bulkheads, deck gun, flak gun! the lot! yet i have not taken any damage

it happend a 2nd time when i re started the mission then i tested it a 3rd time and it happened again! this is the first time this has ever happened to me
My game is modded to 1.5, operation monsun. high res skins (should effect the game in such a way i dont think) and a few additional added submarine and speech mods and thats all!
any help would be great! thanks