03-0397
ArchivedReceived: 14 Oct 2026, 12:00Archived: 15 Oct 2026, 07:42Updated: 31 Oct 2026, 09:06
analysis
No longer in forceSouth breakwater light extinguished off Hitachi Ko, Honshu east coast
The South Breakwater light off Hitachi Ko (Honshu east coast) is reported extinguished. Position given 36-28.5N 140-38.2E (Light List Vol 1. 1836). Report issued 142100 JST OCT. Mariners should note the light is not available for navigation.
Exercise caution when navigating near the south breakwater; rely on other navigation means and maintain a good lookout.
- 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
- Honshu east coast, Hitachi Ko offing, south breakwater
- Validity
- From 14 Oct 2026, 12:00 UTC
142100 JST OCT. - Hazards
- unlit aid to navigation, reduced visual navigation reference
Coast stations for this area
- RCCMRCC KitakyushuJapan65 NM from the area
- RCCMRCC YokohamaJapan79 NM from the area
- RCCMRCC NagoyaJapan98 NM from the area
- DSCDSC Station ChoshiMRCC YokohamaJapanMMSI 004310301MF 150range 150 NM46 NM from the area
- DSCDSC Station Japan Coast GuardMRCC ShiogamaJapanMMSI 004310001HF65 NM from the area
- DSCDSC Station Japan Coast GuardMRCC KobeJapanMMSI 004310001HF65 NM from the area
- DSCDSC Station Japan Coast GuardMRCC OtaruJapanMMSI 004310001HF65 NM from the area
- DSCDSC Station Japan Coast GuardMRCC NiigataJapanMMSI 004310001HF65 NM from the area
Aids to navigation affected
- UnlitSouth Breakwater Light · L.L. VOL 1. 1836 · 36-28.5N 140-38.2E
No aids-to-navigation list in the database yet; aids are shown as the warning names them.
Generated automatically from the warning text on 14 Oct 2026, 12:47 UTC. It can be wrong: the original warning below is the authoritative text.
Message content
AIDS
3RD RCG LOCAL WARNING NO.0397
HONSHU EAST COASTHITACHI KO OFFING SOUTH BREAKWATER LIGHT EXTINGUISHED.
NAVIGATIONAL AIDS
3RD RCG LOCAL WARNING NO.397. 142100 JST OCT.
HONSHU EAST COAST,HITACHI KO OFFING SOUTH BREAKWATER LIGHT,
36-28.50N 140-38.20E, L.L. VOL 1. 1836, EXTINGUISHED.