The Japan P&I Club obtained navigation warnings of the China Waters issued by China MSA. The warnings will take place because of maintenance operation of channels of Yangtze Estuary, well exploration operation, 3d seismic data acquisition project, and survey on the submarine cable from Zhenhai and Dapengshan Island.
1. Inspection on the maintenance operation of channels of Yangtze Estuary of 2019
From 22 January 2019 – 31 December 2019 this work will take place on during daylight, in the water...
https://safety4sea.com/japan-club-informs-of-navigational-warnings-in-china/