German Navy blog “Marine Forum” reports (21 January) that the

China Ship-building Industry Corporation has been contracted with developing and building a 10,000-ton and another 4,000-ton surveillance ship.
(rmks: for paramilitary China Coast Guard or China Marine Surveillance)

Meanwhile, in a move designed to bolster their claims in the South China Sea, they also report,

With Vietnam: China will expand paramilitary infrastructure at Sansha City (Paracel Archipelago) in the South China Sea … permanently base a 5,000-ts patrol ship (rmks: prob. China Marine Surveillance – CMS) and begin regular patrols.

Don’t expect China’s new 10,000 ton cutter to look like a US Coast Guard Cutter. The Chinese seem to measure their Coast Guard primarily in comparison to the Japanese Coast Guard which has until now operated the largest cutters in the world, two 9,350 full load, Shikishima class high endurance helicopter carrying cutters. Like their Japanese counterparts, they are likely to be built to merchant standards, will be only lightly armed, but will have excellent aviation facilities. The additional tonnage is likely to give them an advantage if they get in a “shoving match” with opposing coast guards, and they are likely to have a secondary military transport role. With a relatively large number of boats, they could probably land a fair number of personnel in a relatively short time. By way of comparison the National Security Cutters are 4,500 tons full load.