USS Indianapolis looks like decent CA on paper but in practice is completely different thing. What i like about this ship is much better cammo then in Pensacola and radar, but that is it in other aspects he is even lacking in comparison to Pensacola (and Pensacola is shitty ship). Low amount of damage you can dish out of main battery make this ship low credit earner and him being premium ship earning credits is what he should be good at. Only 9 cannons in 3 batteries 2 on bow one on stern with low traverse speed and long reload of 15S make this ship bad as DD hunter and HE spammer. AP shells are decent but still engaging targets with AP you have to expose your self to enemy and at tiers 6-8 all other ships will have no problem dealing with you since it can still be easily citadel-ed from stern and bow and melted down with rapid HE fire as well. On other hand if you play it safe you will make low damage and there fore low amount of credits.
USS Indianapolis can bee great ship but it needs reload buff desperately or at list better guns.