One of the major problems with wanting to cruise in Mainland China waters is a lack of charts. Bill K says that there are some charts available but hard to actually get. To give you some idea of the magnitude of the problem, let me describe this area. Hong Kong sits at the NE corner of the Pearl River Delta. Macau is about 50 miles SW of there. Zhuhai ferry landing is up river from Macau and just across the border from it. Effectively all the land to the north and west of Macau is Zhuhai. From the ferry landing at Zhuhai to the high ground and mountains that form the western boundary of the Pearl River delta is about 60 miles, may be more. In other words it is about 100 miles from Hong Kong on the NE to the far edge of the Pearl River Delta in the SW. All of this land is in use, as cropland, skyscrapers, miles of 4-8 story buildings, factories. The land is generally barely above water level and subject to flooding. It is criscrossed with numerious channels of which some have names like: Cock Crowing River Sharpening the Knife Tiger Jumping River Dirts Bay. There are at least 8 major branches and from what I have seen the channel dredging is negligable compared to the size of the problem and there are major areas that are quite shallow. There are a number of major bridges and it takes about 30 minutes to drive to Seahorse from the Zhuhai ferry landing. (you can credit Bill's wife Stella with some of this detail). We were told that buying fuel from the barges was likely to get fuel so bad that we would never be able to use it. This rumor was not confirmable and would make one suspicious that we were being mislead in order to steer us to some fuel dock that gave a kickback to the referer. This was in Hong Kong proper. We bought fuel in Hong Kong from a barge and had no problems with it.The land is too expensive for an American style fuel dock, so there are numerous fuel barges. At Zhuhai the barges that smuggle fuel into Hong Kong, or maybe it is the other way around, do so apparently in broad daylight. China law does not have a "recreational" type, just commerical. This recreational designation has been under discussion for at least 4 years. Do NOT hold your breath. Regards, Mike Capt. Mike Maurice Tualatin(Portland), Oregon.