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.

2923(P)/25 PHILIPPINE ISLANDS  Luzon  Submarine cables. Works.
Source: NAMRIA NAVPHIL 97/25

	1. Submarine cable laying operations are taking place, joining the following positions:

	   18 36' .40N. , 121 04' .03E.
	   18 39' .29N. , 121 05' .49E.
	   18 40' .70N. , 121 07' .62E.
	   18 41' .04N. , 121 10' .65E.
	   18 40' .64N. , 121 15' .32E.
	   18 39' .94N. , 121 18' .10E.
	   18 37' .75N. , 121 21' .59E.
	   18 31' .10N. , 121 28' .80E.
	   18 28' .80N. , 121 30' .25E.
	   18 25' .05N. , 121 30' .59E.

	2. and

	   17 57' .6N. , 120 28' .5E.
	   17 59' .1N. , 120 26' .7E.
	   18 06' .6N. , 120 22' .3E.
	   18 09' .4N. , 120 21' .5E.
	   18 10' .9N. , 120 22' .2E.
	   18 14' .7N. , 120 22' .0E.
	   18 24' .4N. , 120 23' .7E.
	   18 33' .6N. , 120 28' .6E.
	   18 38' .1N. , 120 33' .3E.
	   18 40' .6N. , 120 39' .5E.
	   18 42' .3N. , 120 41' .5E.
	   18 43' .0N. , 120 43' .2E.
	   18 42' .8N. , 120 51' .8E.
	   18 42' .0N. , 120 55' .2E.
	   18 42' .2N. , 120 59' .6E.
	   18 41' .5N. , 121 01' .4E.
	   18 39' .2N. , 121 04' .5E.
	   18 36' .4N. , 121 04' .0E.

	3. and

	   17 57' .6N. , 120 28' .5E.
	   17 56' .4N. , 120 20' .6E.
	   17 54' .4N. , 120 17' .2E.
	   17 49' .7N. , 120 13' .7E.
	   17 40' .5N. , 120 11' .1E.
	   17 37' .8N. , 120 11' .4E.
	   17 36' .0N. , 120 12' .4E.
	   17 33' .0N. , 120 17' .5E.
	   17 30' .7N. , 120 20' .0E.
	   17 29' .6N. , 120 22' .6E.
	   17 27' .8N. , 120 24' .2E.
	   17 27' .0N. , 120 24' .2E.
	   17 26' .2N. , 120 24' .9E.
	   17 23' .5N. , 120 24' .1E.
	   17 21' .4N. , 120 24' .8E.
	   17 17' .3N. , 120 22' .8E.
	   17 13' .9N. , 120 22' .3E.
	   17 08' .0N. , 120 23' .4E.
	   17 05' .6N. , 120 23' .3E.
	   17 00' .7N. , 120 21' .0E.
	   16 59' .5N. , 120 21' .0E.
	   16 57' .5N. , 120 20' .2E.
	   16 55' .6N. , 120 20' .1E.
	   16 53' .5N. , 120 20' .7E.
	   16 51' .6N. , 120 22' .7E.

	4. and

	   15 53' .1N. , 119 53' .6E.
	   15 54' .2N. , 119 50' .8E.
	   15 53' .8N. , 119 47' .7E.
	   15 55' .0N. , 119 40' .4E.
	   15 55' .8N. , 119 38' .7E.
	   15 57' .4N. , 119 37' .5E.
	   15 59' .8N. , 119 36' .1E.
	   16 02' .4N. , 119 35' .8E.
	   16 11' .4N. , 119 36' .8E.
	   16 20' .1N. , 119 36' .5E.
	   16 21' .5N. , 119 37' .2E.
	   16 22' .5N. , 119 38' .1E.
	   16 24' .8N. , 119 39' .0E.
	   16 26' .8N. , 119 41' .4E.
	   16 28' .2N. , 119 44' .0E.
	   16 30' .6N. , 119 45' .9E.
	   16 45' .1N. , 120 03' .0E.
	   16 47' .5N. , 120 04' .7E.
	   16 48' .2N. , 120 05' .6E.
	   16 48' .5N. , 120 06' .7E.
	   16 50' .7N. , 120 10' .3E.
	   16 51' .3N. , 120 14' .2E.
	   16 52' .2N. , 120 16' .8E.
	   16 52' .3N. , 120 20' .1E.
	   16 51' .6N. , 120 22' .7E.

	5. and

	   15 53' .07N. , 119 53' .56E.
	   15 52' .35N. , 119 52' .73E.
	   15 52' .80N. , 119 49' .85E.
	   15 52' .51N. , 119 48' .62E.
	   15 50' .51N. , 119 45' .64E.
	   15 46' .46N. , 119 41' .22E.
	   15 43' .15N. , 119 40' .38E.
	   15 30' .01N. , 119 41' .98E.
	   15 24' .92N. , 119 43' .56E.
	   15 18' .78N. , 119 49' .69E.
	   15 17' .54N. , 119 56' .11E.
	   15 16' .24N. , 119 58' .14E.
	   15 14' .69N. , 119 58' .67E.
	   15 12' .36N. , 119 57' .29E.
	   15 10' .17N. , 119 57' .12E.
	   15 07' .24N. , 119 58' .11E.
	   15 04' .03N. , 120 01' .61E.
	   15 03' .65N. , 120 03' .64E.

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

	   (WGS84 DATUM)