RIP to the crew and, as stated, this will make a huge difference to relatives and those who remember and care.

These guys suffered some of the highest attrition of any service during the war, their missions were done in secret so they were largely unsung. Very likely the subs loss wasn't even announced until after the war. Unlike other ship types and aircraft, there tended to be no survivors, so absolutely no one or no way to know any details of their last mission.

Rare exceptions, if you've never read about the USS Tang, check it out. Was actually the top scoring sub of the war, it was sunk in battle after sinking other Jap ships by its own torpedo on a circular run. Was sunk in relatively shallow water [under 200 ft], but thats not the reason why there were survivors. Most of the survivors [10 or so] were blown off the bridge and picked up by enemy ships they were just attacking ,,, Although a scant few managed to escape via an escape compartment using methods and equipment AFAIK had not been tried before or since, and some perished in the attempt. Those that survived captivity were able to tell of the final moments and as you may imagine, these details were none too comforting. Most of the crew concentrated on the front of the sub where the escape compartment was located, up until then the sub was submerged but on an even keel. The concentration of desperate men towards the front cause it to angle nose down, those that made it had to lock the hatches to prevent more from coming in and adding to the angle. Quite a harsh but necessary thing to do.
Air was running out and everyone grew lethargic, I think about 6 guys made the escape attempt, 1 at a time via a compression chamber which itself was quite an ordeal. 4 out that 6 survived to make it to the surface, though one went mad and paddled away into eternity and another was internally torn apart by the bends. The survivors reported after the war that the doomed crew in the sub was largely at peace, very little fighting, raging or panic, probably due to the lack of oxygen dulling their senses. They even saw some writing out their farewell notes then simply went to sleep.

This is all from memory of a book I read years back, quite a story. https://www.goodreads.com/book/show/913019.Clear_the_Bridge_

Doug