Hong Kong Marine Department has informed that a seabed survey will be carried out in the southwestern part of Hong Kong waters for a period of approximately one month.

With immediate effect, the works will be carried out by a motor boat at one of the positions at one time. One guard boat will provide assistance.

A working area of approximately 25 metres around the motor boat will be established. An orange marker buoy will be laid to mark the position of the anchor extending from the motor boat.

Works will be executed from 08:00 to 17:00 hours. No works will be carried out on Saturdays, Sundays and public holidays. Vessels engaged in the works will not stay in the works area outside the hours of work.

Diving operations will be carried out from time to time.

Vessels navigating in the vicinity should proceed with caution and keep clear of the working area at slow speed, bearing in mind there are divers working in the area, Marine Department said.