Positions quoted in the 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 in the ENCs affected.

720(P)/17 MEXICO — Pacific Ocean Coast — Approaches to Ensenada — Works. 
Source: Mexican Notice 1/399(P)/17

	1. Works are taking place to extend Ensenada W groyne, 400m, in a SSW direction in the vicinity of position 31° 50' .63N. , 116° 37' .53W. 

	2. The light-beacon at the head of the groyne will be extinguished and a green buoy, Fl.G.5s, will mark the progress of the works.

	3. Mariners should navigate with caution in the area.

	4. Chart 1938 will be updated when works are complete.

	   (WGS84 DATUM)