Haijian 66

Haijian 66 (海监66) is a China Marine Surveillance (CMS) ship in the East China Sea Fleet. She is one of the fastest CMS ships in the second building plan. In February 2012, Haijian 66 obstructed Japanese survey vessel Syoyo (HL-01) in disputed waters near Okinawa.

CMS ships of the same class, 1,000t-class Type-II, include Haijian 75.

Haijian 66 was renamed CCG-2166 in July 2013.