Passage: In early November, Allied intelligence learned that the Japanese were preparing again to try to retake Henderson Field. Therefore, the U.S. sent Task Force 67, a large reinforcement and resupply convoy carrying Marine replacements, two U.S. Army infantry battalions, and ammunition and food, commanded by Turner, to Guadalcanal on 11 November. The supply ships were protected by two task groups, commanded by Rear Admirals Daniel J. Callaghan and Norman Scott, and aircraft from Henderson Field. The ships were attacked several times on 11 and 12 November by Japanese aircraft from Rabaul staging through an air base at Buin, Bougainville, but most were unloaded without serious damage.U.S. reconnaissance aircraft spotted the approach of Abe's bombardment force and passed a warning to the Allied command. Thus warned, Turner detached all usable combat ships under Callaghan to protect the troops ashore from the expected Japanese naval attack and troop landing and ordered the supply ships at Guadalcanal to depart by early evening 12 November. Callaghan's force comprised two heavy cruisers, three light cruisers, and eight destroyers.Around 01:30 on 13 November, Callaghan's force intercepted Abe's bombardment group between Guadalcanal and Savo Island. In addition to the two battleships, Abe's force included one light cruiser and 11 destroyers. In the pitch darkness, the two warship forces intermingled before opening fire at unusually close quarters. In the resulting mêlée, Abe's warships sank or severely damaged all but one cruiser and one destroyer in Callaghan's force and both Callaghan and Scott were killed. Two Japanese destroyers were sunk and another destroyer and the Hiei heavily damaged. Despite his defeat of Callaghan's force, Abe ordered his warships to retire without bombarding Henderson Field. The Hiei sank later that day after repeated air attacks by CAF aircraft and aircraft from the U.S. carrier Enterprise. Because of Abe's failure to neutralize Henderson Field, Yamamoto ordered the troop transport convoy,...

Question: How many destroyers were included in Abe's fleet?
11