NAVAREA XI - 20-0153

Issued: 6 Apr 2020, 03:00Last modified: 3 Nov 2026, 12:21

analysis

Active

Yellow observation buoy reported in northern South China Sea

A yellow observation buoy was reported present in the northern South China Sea at the position given. The report states the buoy "exists" at 19-20.6N 113-45.9E and was noted on 04 Apr. No further details, warnings or safety distances are provided.

Keep a good lookout and navigate with caution in the area; pass clear of the position.

Type: Aids to navigation · severity low
Feed: Aids to navigationAll warnings of this kind on the map (contributors), or as an API feed: /api/v2/feeds/aton/
Location: South China Sea, northern part
Hazards: observation buoy (yellow)

Coast stations for this area

RCCMRCC Hong KongHong Kong, China (Associate Member of IMO)178 NM from the area
RCCSanya HASChina251 NM from the area
RCCMRSC ShantouChina297 NM from the area
DSCDSC Station Hong Kong Marine Rescue Victoria PeakMRCC Hong KongHong Kong, China (Associate Member of IMO)MMSI 004773500VHF 50range 50 NM177 NM from the area
DSCDSC Station Hong Kong Marine Rescue Tai Mo ShanMRCC Hong KongHong Kong, China (Associate Member of IMO)MMSI 004773500VHF 50, MF 200, HFrange 200 NM185 NM from the area
DSCDSC Station Haikou RadioHaikou HSA/MRCC Hainan ProvinceChinaMMSI 004123500VHF 25range 25 NM201 NM from the area
DSCDSC Station Zhanjiang RadioMRSC ZhanjiangChinaMMSI 004123100VHF 25, MF 100range 100 NM221 NM from the area
DSCDSC Station Guangzhou RadioMRCC GuangdongChinaMMSI 004123100VHF 25, MF 100range 100 NM228 NM from the area

Aids to navigation affected

Newly establishedyellow observation buoy · 19-20.6N 113-45.9E

No aids-to-navigation list in the database yet; aids are shown as the warning names them.

Generated automatically from the warning text on 27 Sept 2026, 15:31 UTC. It can be wrong: the original warning below is the authoritative text.

Message content

SOUTH CHINA SEA, NORTHERN PART. YELLOW OBSERVATION BUOY REPORTED TO EXISTS IN 19-20.60N 113-45.90E AT 04 APR. NAVAREA XI

Location map

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Related messages

26-0496
SULU SEA. SPACE DEBRIS. 081800Z TO 082400Z NOV. AREAS BOUNDED BY A. 09-16.8N 118-59.4E 09-24.0N 119-09.0E 09-06.0N 119-22.2E 08-59.4N 119-12.6E. B. 09-16.2N 118-57.0E 09-28.2N 119-12.6E 08-57.0N 119-36.0E 08-45.0N 119-19.8E. CANCEL 0494/26. CANCEL THIS MSG 090100Z NOV.
26-0493
SOUTH CHINA SEA, NORTHERN PART. GUNNERY. 062300Z TO 071300Z NOV, ALTERNATE 132300Z TO 141400Z NOV. AREA BOUNDED BY 10-25-10N 114-18-34E 10-25-17N 114-25-48E 10-20-57N 114-26-05E 10-20-12N 114-18-34E. CANCEL THIS MSG 141500Z NOV.
26-0492
NAVAREA XI WARNING MESSAGES IN FORCE 311200Z OCT. ONLY THOSE MESSAGES ISSUED DURING LAST SIX WEEKS ARE LISTED HEREIN. 0483 0484 0485 0486/26. THE COMPLETE TEXT OF ALL IN FORCE NAVAREA XI WARNINGS ARE AVAILABLE FROM THE JHOD WEBSITE "HTTPS://WWW1.KAIHO. MLIT.GO.JP/JHD-E.HTML" (ONLY "E" OF ADDRESSING IS A CAPITAL LETTER). CANCEL 0490/26.
26-0495(archived)
SELAT MAKASAR. SEISMIC SURVEY WORKS BY S/V RAMFORM SOVEREIGN CONCLUDED. CANCEL 0034/26 AND THIS MSG.
26-0494(archived)
SULU SEA. SPACE DEBRIS. 051900Z TO 060100Z NOV. AREAS BOUNDED BY A. 09-16.8N 118-59.4E 09-24.0N 119-09.0E 09-06.0N 119-22.2E 08-59.4N 119-12.6E. (2)09-16.2N 118-57.0E 09-28.2N 119-12.6E 08-57.0N 119-36.0E 08-45.0N 119-19.8E. CANCEL THIS MSG 060200Z NOV.