The Type 639 (NATO reporting name: Kanhai) is a class of Chinese People's Liberation Army Navy (PLAN) auxiliary ship. The Type 639 is an ocean surveillance ship using a small-waterplane-area twin hull; it is equipped with a tactical towed array sonar for observing submarines. The Type 639A is a hydrographic survey variant which may retain some submarine surveillance capability; existing or new ships may have been converted.
Ships of the class
Name Builder Launched Commissioned Fleet Status Bei Ce 901 By 2018 North Sea Fleet Active Bei Ce 902 By 2018 North Sea Fleet Active Dong Ce 232 By 2018 East Sea Fleet Active Dong Ce 233 By 2015 East Sea Fleet Active Nan Ce 429 By 2015 South Sea Fleet Active Nan Ce 430 By 2015 South Sea Fleet Active
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