Interestingly, there is only one incident of a submarine sinking another while both were submerged: https://en.m.wikipedia.org/wiki/Sinking_of_U-864

!noncredibledefense@sh.itjust.works

Very funny. This is just a pornographic image of Santa, God and three elves having an orgy using mjölnir as a dildo. Add an NSFW tag please!

I bet everything on n°2!