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.								
								
1992(P)/23 UNITED STATES OF AMERICA —  Gulf of Mexico — Depths. Obstructions. Dredged depths. Wreck.								
Source: ENC US5HOUEC								
								
	1.	Numerous changes to depths, obstructions, and dredged depths in the vicinity of the Houston Ship Channel. The most significant are as follows:						
								
	2.	Obstructions exist in the following positions:						
								
		Depth						Position
		33ft						29° 44' .638N. , 95° 17' .040W.
		16ft						29° 43' .832N. , 95° 16' .642W.
		13ft						29° 43' .820N. , 95° 16' .640W.
		12ft						29° 43' .713N. , 95° 16' .596W.
		31ft						29° 43' .441N. , 95° 15' .054W.
								
	3.	Depths less than charted exist. The most significant are:						
								
		Depth						Position
		22ft						29° 43' .468N. , 95° 16' .220W.
		* 35ft						29° 44' .329N. , 95° 16' .743W.
		* 35ft						29° 44' .213N. , 95° 16' .684W.
								
	4.	*Many of the charted dredged depth areas within the Houston Shipping Channel are no longer maintained.														
	5.	Wreck and obstructions have been removed from the following positions:						
								
		Obstruction					29° 44' .723N. , 95° 17' .129W.
		Obstruction					29° 44' .063N. , 95° 16' .615W.
		Wreck						29° 43' .516N. , 95° 16' .266W.
								
	6.	Mariners are advised to navigate with caution in the area and consult the local port authorities for the latest information.														
	7.	Chart will be updated when works are complete.						
								
	8.	Former Notice 116(P)/23 is cancelled.						
								
		*Indicates new or revised entry						
								
		(NAD83 DATUM)