How long does it take to get to Shengsi from Qushan Island by boat?

20 minutes. The high-speed passenger ship from Qushan Island to Shengsi takes only 20 minutes. According to the map, Qushan Island is located 27 kilometers northeast of Gaoting Town, Zhoushan City, Zhejiang Province. Shengsi County, located in the east of Hangzhou Bay and southeast of the Yangtze River estuary, is an island county in the easternmost part of Zhejiang Province and the northernmost part of Zhoushan Archipelago.