Of course not.
Because it's a naval term for anything that brings you good fortune, dating from the days when it was better to have wild and dangerous sea beasties in the vessel being tamed than outside attacking it.
Sub occ, of course, refers to the submarine octopus. To this day, no naval vessel goes to sea without a cephalopod on board.
In fact, in 1973 during a conflict off the coast of Guam, the captain of USS Typhon was replaced by Terry the Octopus on mental capacity grounds - becoming the first sub cap occ.
Sub occ, ladies and gentlemen.