surveillance ship

基本解释

New ships, including a destroyer, a littoral combat ship and an ocean surveillance ship
新的舰船，包括一艘驱逐舰，一艘沿海战斗舰和一艘海洋侦察船。
On the incident of Impeccable, the US Navy surveillance ship, this time, I have already made China's view and position clearly. I have nothing more to add.
关于这次发生的美国海军监测船“无瑕号”事件，我也清楚表明了中方的看法和立场，我没有更多的补充。
USNS Impeccable (T-AGOS-23) is an Impeccable-class ocean surveillance ship acquired by the U.S. Navy in 2001 and assigned to the Navy’s Special Missions Program.
美国海军完美无暇号（USNS Impeccable T-AGOS-23）是一艘2001年服役的，美国海军的海洋探测船，隶属于于美国海军特别行动组。

But for unexplained reasons the two sides did not use it when Chinese boats harassed an American surveillance ship, the Impeccable, in the South China Sea in March.
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