Japanese destroyers shelled the US position in Tulagi and Guadalcanal according to the U.S. Joint Intelligence Committee. Daily summary dated 21 August 1942

An item reported that on 18 August 2 Japanese destroyers shelled the US position in Tulagi and Guadalcanal. A heavy bomber scored a direct hit on one of the destroyers setting her into fire.

Source

Map Room Papers (Roosevelt Administration), 1942 - 1945. U.S. Joint Intelligence Committee. Daily summary No. 254 dated 21 August 1942.