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.												
												
800(P)/26 MEXICO — Gulf of Mexico — Depths.												
Source: ENCs MX683211 and MX583210												
												
	1.	Depths less than charted exist within Dos Bocas. The most significant are as follows:										
												
		Depth				Position
				
		10·6m				18° 25' .945N. , 93° 12' .159W.	
			
		9·8m				18° 25' .981N. , 93° 12' .133W.
				
		9·4m				18° 26' .023N. , 93° 12' .105W.	
			
		3·8m				18° 26' .619N. , 93° 11' .510W.	
			
		7·1m				18° 25' .956N. , 93° 11' .322W.	
			
		7·2m				18° 25' .875N. , 93° 11' .330W.	
			
		4·9m				18° 26' .004N. , 93° 11' .212W.	
			
		7m				18° 26' .010N. , 93° 11' .157W.	
			
		6·1m				18° 26' .005N. , 93° 11' .032W.
				
		5·3m				18° 25' .878N. , 93° 12' .594W.	
			
		9·3m				18° 27' .35N. , 93° 13' .45W.
				
		17·6m				18° 28' .97N. , 93° 08' .36W.
				
		19·9m				18° 28' .88N. , 93° 11' .43W.	
			
												
	2.	*Depths deeper than charted exist within the Port of Dos Bocas. The most significant are as follows:										
												
		Depth				Position
				
		14m				18° 27' .161N. , 93° 12' .511W.	
			
		13·3m				18° 27' .077N. , 93° 12' .396W.	
			
		12·8m				18° 26' .988N. , 93° 12' .389W.	
			
		13·1m				18° 26' .915N. , 93° 12' .305W.	
			
		12·3m				18° 26' .778N. , 93° 12' .334W.	
			
		13·1m				18° 27' .235N. , 93° 12' .208W.	
			
		13·6m				18° 26' .863N. , 93° 12' .092W.	
			
		12·2m				18° 26' .708N. , 93° 12' .113W.	
			
												
	3.	*A new pier has been established, joining the following positions:										
												
		18° 26' .069N. , 93° 12' .059W.	
									
		18° 26' .299N. , 93° 12' .142W.	
									
												
	4.	*A restricted area, Security Zone III, prohibiting all activity except that required for oil exploration and production, has been established joining the following positions:										
												
		18° 27' .63N. , 93° 16' .42W.
										
		18° 27' .10N. , 93° 15' .40W.
										
		18° 36' .40N. , 93° 07' .40W.	
									
		18° 40' .16N. , 93° 06' .88W.										
												
	5.	and										
												
		18° 40' .60N. , 93° 11' .46W.	
									
		18° 38' .65N. , 93° 16' .42W.	
									
												
	6.	*Restricted areas, prohibiting fishing and diving, and with a maximum navigation speed of 5 knots, have been established, joining the following positions:										
												
		18° 28' .00N. , 93° 15' .00W.	
									
		18° 32' .40N. , 93° 15' .00W.	
									
		18° 32' .40N. , 93° 11' .60W.	
									
		18° 28' .90N. , 93° 11' .60W.	
									
		18° 28' .00N. , 93° 12' .65W.										
												
	7.	and										
												
		18° 28' .62N. , 93° 08' .40W.	
									
		18° 29' .50N. , 93° 08' .40W.
										
		18° 32' .10N. , 93° 09' .90W.	
									
		18° 32' .40N. , 93° 11' .60W.	
									
		18° 28' .90N. , 93° 11' .60W.	
									
		18° 28' .00N. , 93° 12' .65W.										
												
	8.	and										
												
		18° 28' .00N. , 93° 14' .92W.	
									
		18° 27' .50N. , 93° 14' .90W.	
									
		18° 27' .50N. , 93° 09' .10W.										
												
	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 the next New Edition of Chart 359.										
												
	11.	*Charts 2626 and 1307 will be updated by Notice to Mariners.										
												
	12.	*Former Notice 2711(P)/24 is cancelled.										
												
		*Indicates new or revised entry.										
												
		(WGS84 DATUM)