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.

4687(P)/21 INDONESIA — Sumatera — Light-beacon.
Source: Indonesian Notice 30/414/21

	1. A light beacon, marking Karang Singa, is being constructed in the vicinity of position 1° 16' .05N. , 104° 21' .95E.

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

	   (WGS84 DATUM)