[desirableroasted]

The green bar in the RA/SO room does not lengthen if you put a radio-qualified officer in the command room, so I suspect there's no effect.

In fact, since the helmsman qualification is just eye-candy, the qualifications of any of your officers in the control room seem to have no bearing on the boat's operations (i.e., a midshipman medic is just as effective a navigator or weapons officer as a senior lieutenant).

As a result, I give officers qualifications only in Watch, Gunnery, Torp, Machine and Repair (every officer's second qualification is repair; I give my experienced lieutenants a third rating, too).

By the way, its worth remembering that while officers can carry up to three qualifications, petty officers can only have one. If you give them more through SH3 Commander, only the top one "counts."