Are these facts true??????

[Xandor]

It's absolutely not funny especially if it causes casualties. In case of U-1206 it was not even mailfunction or failure. It was misuse. Due to compicated head system crew member should use toilet with help of qulified specialist. But U-boat commader, Kptlt. Karl-Adolf Schlitt decided to use it by his own. Of course he did something wrong and the flooding of the forward section left Schlitt with no alternative than to surface. Once surfaced U-1206 was discovered and bombed by British patrols, forcing Schlitt to scuttle the submarine. One man died in the attack, three men drowned in the heavy seas after abandoning the vessel and 46 were captured.

IIRC USS Scorpion sunk in 1968.