Battle off Horaniu

The Battle off Horaniu (Japanese: 第一次ベララベラ海戦) was a minor naval battle of the Pacific campaign of World War II fought on the night of August 17, 1943 near the island of Vella Lavella in the Solomon Islands

Background
After the fall of Munda and their defeat in the Battle of Vella Gulf, the Japanese had decided to evacuate their garrisons in the central Solomons. An evacuation convoy escorted by four destroyers (JAPANESE DESTROYER Sazanami, JAPANESE DESTROYER Hamakaze, JAPANESE DESTROYER Isokaze, and JAPANESE DESTROYER Shigure) commanded by Rear Admiral Matsuji Ijuin set out from its staging base at Horaniu on the northern tip of Vella Lavella on August 17 to evacuate the island of Kolombangara to the east.

Battle
At about 23:30 they were attacked by planes and were still in some disorganization when they were spotted at 00:29 by an American force of four destroyers (USS Nicholas (DD-449), USS O'Bannon (DD-450), USS Taylor (DD-468), and USS Chevalier (DD-451)) commanded by Captain Thomas J. Ryan. After an ineffective exchange of torpedoes and gunfire at long range, the Japanese retreated at about 01:00.

Aftermath
The Japanese had saved their barges and were subsequently able to evacuate 9,000 troops from Kolombangara.