Overhaul May through June 1945
In anticipation of the invasion of Japan, Indianapolis received the most up-to-date electronic equipment, including new main-battery director radars, fire control radar on two 40mm mounts near the after funnel, electronic countermeasure equipment and a new communications capability.
The 20mm battery was again changed, with eight twin 20mm mounts replacing the singles. The starboard catapult was removed, the aircraft crane beefed-up, and the old biplane SOCs were replaced by two new SC-2 Curtis Seahawks. Indianapolis took a few days for sea trials and then put into Hunter's Point Navy Yard, San Francisco.

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