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.

833(P)/21 PHILIPPINE ISLANDS — Luzon — Submarine cables.
Source: Phil Nav 2/21

	1. Submarine cables are being laid joining the following positions:

		13° 35' .18N. , 124° 14' .39E.

		13° 33' .08N. , 124° 16' .30E.

		13° 11' .90N. , 124° 28' .09E.

		13° 03' .54N. , 124° 27' .01E.

		12° 56' .46N. , 124° 34' .07E.

		12° 52' .44N. , 124° 42' .43E.

		12° 45' .35N. , 124° 44' .00E.

		12° 42' .42N. , 124° 42' .06E.

		12° 30' .53N. , 124° 37' .79E.

		and

		12° 13' .44N. , 123° 17' .10E.

		12° 12' .04N. , 123° 12' .91E.

		12° 13' .28N. , 123° 07' .08E.

		12° 20' .12N. , 122° 55' .02E.

		12° 22' .84N. , 122° 45' .85E.

		12° 22' .30N. , 122° 41' .22E.

	2. Charts will be updated when full details are available.

	3. Mariners are advised to navigate with caution in the area.

	(WGS84 DATUM)