BOHAI SEA, FROM 220000UTC JAN TO 121600UTC MAR, SURVEY BY HAIYANGSHIYOU707 IN AREA WITH BOUNDED BY: A:38-01-34.9N,119-36-59.7E; B:38-01-35.3N,119-39-02.8E; C:37-59-58.0N,119-39-03.3E; D:37-59-57.6N,119-37-00.2E。 CAUTION T0 AVOID.