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. 2663(P)/26 VIETNAM — Fairways. Buoyage. Depths. Turning circle. Harbour limits. Two-way routes. Source: ENCs V14S0021 and V1300013 1. A new fairway, marked by buoys and with a least depth of 14m, has been established, bounded by the following positions: 16° 08' .95N. , 108° 10' .85E. 16° 08' .17N. , 108° 10' .10E. 16° 08' .01N. , 108° 09' .98E. 16° 07' .84N. , 108° 09' .76E. 16° 07' .72N. , 108° 09' .42E. 16° 07' .72N. , 108° 09' .06E. 16° 07' .88N. , 108° 08' .59E. 16° 08' .03N. , 108° 08' .48E. 16° 08' .13N. , 108° 08' .45E. 16° 08' .30N. , 108° 08' .55E. 16° 08' .28N. , 108° 08' .80E. 16° 08' .04N. , 108° 08' .86E. 16° 07' .84N. , 108° 09' .04E. 16° 07' .83N. , 108° 09' .33E. 16° 07' .92N. , 108° 09' .65E. 16° 08' .06N. , 108° 09' .85E. 16° 09' .00N. , 108° 10' .78E. 2. A new fairway, marked by buoys, has been established, bounded by the following positions: 16° 10' .01N. , 108° 11' .03E. 16° 07' .35N. , 108° 12' .44E. 16° 07' .13N. , 108° 12' .69E. 16° 06' .94N. , 108° 12' .99E. 16° 06' .89N. , 108° 13' .10E. 16° 06' .87N. , 108° 13' .26E. 16° 06' .92N. , 108° 13' .70E. 16° 06' .60N. , 108° 14' .24E. 16° 06' .38N. , 108° 14' .41E. 16° 06' .28N. , 108° 14' .46E. 16° 06' .21N. , 108° 14' .48E. 16° 05' .74N. , 108° 14' .26E. 16° 05' .76N. , 108° 14' .21E. 16° 06' .06N. , 108° 14' .35E. 16° 06' .22N. , 108° 14' .45E. 16° 06' .37N. , 108° 14' .39E. 16° 06' .57N. , 108° 14' .21E. 16° 06' .63N. , 108° 14' .12E. 16° 06' .80N. , 108° 13' .83E. 16° 06' .81N. , 108° 13' .66E. 16° 06' .86N. , 108° 13' .54E. 16° 06' .82N. , 108° 13' .26E. 16° 06' .84N. , 108° 13' .07E. 16° 06' .91N. , 108° 12' .94E. 3. and 16° 07' .06N. , 108° 12' .64E. 16° 07' .31N. , 108° 12' .39E. 16° 09' .99N. , 108° 10' .97E. 4. A turning circle, radius 330m, has been established, centred on 16° 08' .11N. , 108° 08' .65E. 5. Depths less than charted exist within Au Tho Quang. The most significant are as follows: Depth Position 5·1m 16° 06' .92N. , 108° 13' .29E. 5·1m 16° 06' .92N. , 108° 13' .48E. 6. Da Nang Harbour Limit has been extended, and now joins the following positions: 16° 12' .64N. , 108° 12' .51E. 16° 13' .87N. , 108° 14' .20E. 16° 10' .64N. , 108° 16' .74E. 16° 09' .33N. , 108° 14' .95E. 7. My Khe Harbour Limit has been amended, and now joins the following positions: 16° 05' .15N. , 108° 14' .97E. 16° 05' .15N. , 108° 18' .21E. 16° 03' .10N. , 108° 18' .21E. 16° 03' .10N. , 108° 14' .96E. 8. The two-way route, joining the following positions, no longer exists: 16° 06' .90N. , 108° 13' .01E. 16° 03' .13N. , 108° 13' .46E. 9. Mariners are advised to navigate with caution in the area. 10. These changes will be included in a New Edition of Chart 3884 to be published mid 2026. (WGS84 DATUM)