Passage: Kondo's force approached Guadalcanal via Indispensable Strait around midnight on 14 November, and a quarter moon provided moderate visibility of about 7 km (3.8 nmi; 4.3 mi). The force included Kirishima, heavy cruisers Atago and Takao, light cruisers Nagara and Sendai, and nine destroyers, some of the destroyers being survivors (along with Kirishima and Nagara) of the first night engagement two days prior. Kondo flew his flag in the cruiser Atago.Low on undamaged ships, Admiral William Halsey, Jr., detached the new battleships Washington and South Dakota, of Enterprise's support group, together with four destroyers, as TF 64 under Admiral Willis A. "Ching" Lee to defend Guadalcanal and Henderson Field. It was a scratch force; the battleships had operated together for only a few days, and their four escorts were from four different divisions—chosen simply because, of the available destroyers, they had the most fuel. The U.S. force arrived in Ironbottom Sound in the evening of 14 November and began patrolling around Savo Island. The U.S. warships were in column formation with the four destroyers in the lead, followed by Washington, with South Dakota bringing up the rear. At 22:55 on 14 November, radar on South Dakota and Washington began picking up Kondo's approaching ships near Savo Island, at a distance of around 18,000 m (20,000 yd).

Question: Where were Kondo's ships when they were first detected by radar?
near Savo Island