Ok. Here’s a related amphib assault question – no kamikazi though.
US assaults FIC with 1 Sub + transports
Japan has 3 subs
As the US attacker, I can ignore the subs and launch an amphib assault, if the transport is escorted by a “warship” because of the following in the rules
“A transport that is part of an amphibious assault must end its movement in a friendly sea zone (or one that could become friendly as result of sea combat) from which it can conduct the assault. However, a transport is not allowed to offload land units for an amphibious assault in a sea zone containing 1 or more ignored enemy submarines unless at least 1 warship belonging to the attacking power is also present in the sea zone at the end of the Combat Move phase.”
Subs do not make a SZ friendly or hostile. So what effect does the escorting sub do?
One interpretation is that a sub is a “warship” and suppresses the other subs. But I see it equally possible that “warship” = surface vessel, and thus the escort cannot suppress the subs. Combat will occur if the defender wishes to fight–he has the option to submerge.