Positions quoted in this Preliminary Notice reproduced below are referred to WGS84 or a compatible datum and may be plotted directly on this ENC. 								
Some or all of the information contained in this Notice to Mariners may have been included on the ENCs affected.								
								
1981(P)/26 CHINA  South Coast Vessel traffic services.Radio reporting lines.Anchor berths.								
Source: Chinese Chart 16770								
								
	1. There have been changes to the VTS limits in the Gulf of Tonkin. New radio reporting lines, inbound and outbound, have been established joining the following positions:						
								
		Fangcheng VTS						
								
		21 34' .85N.,108 19' .00E.	
					
		21 26' .98N.,108 19' .01E.	
					
		21 26' .98N.,108 27' .03E.	
				
		21 33' .38N.,108 27' .03E.						
								
		Qinzhou Wan VTS						
								
		21 38' .56N.,108 33' .01E.		
				
		21 24' .52N.,108 33' .01E.
						
		21 24' .51N.,108 42' .01E.	
					
		21 41' .60N.,108 42' .04E.						
								
		Beihai VTS						
								
		21 26' .24N.,109 05' .98E.		
				
		21 33' .99N.,108 57' .02E.	
					
		21 20' .00N.,108 57' .01E.	
					
		21 20' .00N.,109 05' .94E.						
								
	2. The formerQinzhou VTSradio reporting line has been deleted joining the following positions:						
								
		21 38' .12N.,108 31' .98E.	
					
		21 20' .02N.,108 31' .98E.	
				
		21 20' .03N.,108 44' .46E.
						
		21 36' .49N.,108 44' .47E.						
								
	3. The following anchorage berths have been removed, centred on:						
								
		Berth designation		Position

		B4				21 28' .52N.,108 22' .19E.

		B5				21 28' .99N.,108 22' .84E.

		B8				21 28' .49N.,108 23' .40E.
								
	4. These changes will be included in a New Edition of Chart 3992 to be published mid 2026.						
								
	5. Charts 3938, 3999, 1728 and 3892 will be updated by Notice to Mariners.						
								
	   (CGCS 2000 DATUM)