SLMMs

[steel_selachian]

Just speculation - is there any way we could get the Mk 67 Submarine-Launched Mobile Mines to function realistically, i.e. have a sub launch the weapon at a target and have it spawn or launch a static bottom mine? Sort of like how ASROCs work.

[Swordfish]

When I first got the FC Database Editor, I experimented with that, too.
Another interesting option would be ground mines, especially those chinese-manufactured mines that fire a rocket-propelled missile into the keel of enemy ships.

[Fleet Command CC]

Yep you probably could do this, but you would need to mess around with the doctrines has well. :)