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.																									
5073(P)/25 VIETNAM —  Works. Buoyage. Bridge. Depths. Virtual aids to navigation.																		
Source: VMS-North Notices 23/25, 29/25, 33/25, 35/25, 54/25, 60/25, 63/25 and ENCs V14N0007 and V14N0008																																													
	1.	Construction works, marked by special light-buoys, are taking place, within an area bounded by the following positions:																																				
		20° 52' .17N. , 106° 41' .58E.	
																						
		20° 52' .20N. , 106° 41' .57E.
																							
		20° 52' .27N. , 106° 41' .69E.
																							
		20° 52' .25N. , 106° 41' .70E.																							
																									
	2.	and																							
																									
		20° 52' .46N. , 106° 41' .64E.	
																						
		20° 52' .37N. , 106° 41' .70E.	
																						
		20° 52' .30N. , 106° 41' .56E.	
																						
		20° 52' .39N. , 106° 41' .52E.																							
																									
	3.	Royal Bridge has been established, joining the following positions:																																											
		20° 52' .54N. , 106° 42' .90E.	
																						
		20° 52' .38N. , 106° 42' .77E.																							
																									
	4.	A depth of 16m exists in position 20° 47' .54N. , 106° 54' .79E.																																												
	5.	Depths less than charted exist in the following positions:																																												
		Depth						Position
																	
		6·6m						20° 49' .11N. , 106° 53' .54E.
																	
		5·7m						20° 52' .04N. , 106° 41' .21E.	
																
		12·1m						20° 47' .45N. , 106° 54' .86E.	
																
		13·1m						20° 48' .11N. , 106° 54' .80E.	
																
		0·8m						20° 45' .04N. , 106° 52' .32E.	
																
		6·1m						20° 49' .93N. , 106° 47' .37E.																	
																									
	6.	Depths less than charted exist within an area bounded by the following positions:																																											
		20° 48' .93N. , 106° 50' .70E.
																							
		20° 48' .35N. , 106° 50' .70E.
																							
		20° 48' .35N. , 106° 49' .98E.	
																						
		20° 48' .93N. , 106° 49' .98E.																							
																									
	7.	Lateral light-buoys have been removed as follows:																																											
		Buoy type					Characteristics						Designation					Position	
			
		Spar						Fl.G.3s							15TN						20° 48' .01N. , 106° 54' .96E.	
			
		Pillar						Fl.R.3s							HP24						20° 47' .45N. , 106° 54' .86E.				
																									
	8.	Virtual Aids to Navigation, V-AIS, have been established at the following light-beacons:																																						
		Designation					Position	
																
		SC7						20° 52' .59N. , 106° 41' .97E.	
																
		SC5						20° 52' .64N. , 106° 42' .07E.	
																
		SC3						20° 52' .69N. , 106° 42' .47E.																	
																									
	9.	Mariners are advised to navigate with caution in the area and consult the local port authorities for the latest information.																																								
	10.	These changes will be included in a New Edition of Chart 3882 to be published late 2025.																																												
	11.	Chart 3881 will be updated by Notice to Mariners.																																													
		(WGS84 DATUM)