Frobisher was partially disarmed as a training ship in 1932 .
Frobisher was partially reverted to a cruiser in 1937 when Vindictive was specially demilitarised for this role .
Frobisher was partially disarmed as a training ship in 1932 , but reverted to a cruiser in 1937 when Vindictive was specially demilitarised for this role .