Mine got national flag decals or painted on. Cruisers on the aft, destroyers mid ships. @general-LD
The only metal ones I know of that are close in scale are GHQ’s micronauts at 1/2400.
@general-LD
“When attacking or defending, hits scored by air units cannot be assigned to submarines
unless there is a destroyer friendly to the air units in the battle.” (Rulebook, page 30)
@general-LD Rulebook says:
"Submersible: A submarine has the option of submerging. It can do this anytime it would otherwise make a Surprise Strike (see below). The decision is made before any dice are rolled by either side (the attacker decides first) and takes effect immediately. When a submarine submerges, it’s immediately removed from the battle board and placed back on the map. As a result, it can no longer fire or take hits in that combat. "