03-0413
Diving exercise off Atami and approaches, Honshu south coast
No longer in forceReceived 27 Oct 2026, 07:20 UTCArchived 28 Oct 2026, 12:21 UTC
Warning text
Positions open on the mapEXERCISES
3RD RCG LOCAL WARNING NO.0413
HONSHU SOUTH COAST ATAMI KO AND APPROACH DIVING EXERCISE
EXERCISE
3RD RCG LOCAL WARNING NO.413. 271620 JST OCT.
HONSHU SOUTH COAST, ATAMI KO AND APPROACH,
DIVING EXERCISE BY SELF-DEFENSE FORCE DIVERS.
281830 TO 282100 JST OCT,
WITHIN 1500 METRES OF 35-05.50N 139-05.00E.
ALTERNATE AREA.
WITHIN 1500 METRES OF 35-04.70N 139-04.70E.
Location map
Open in the full mapAnalysis
No longer in forceJapanese Self-Defense Force divers will conduct diving exercises off Atami on the south coast of Honshu. Activity will take place 28 Oct from 1830 to 2100 JST (0930-1200 UTC). Two alternate safety areas are defined, each within 1500 metres of the given positions. Mariners should keep clear of the areas and navigate with caution.
Keep clear of the exercise areas (within 1500 metres of the positions) and navigate with caution.
- Type
- Military exercise · severity moderate
- Feed
- Military exercises and firingAll warnings of this kind on the map, or as an API feed.
- Location
- Honshu south coast, Atami Ko and approach
- Validity
- From 28 Oct 2026, 09:30 UTC
Until 28 Oct 2026, 12:00 UTC281830 TO 282100 JST OCT - Activity periods
- 28 Oct 2026, 09:30 UTC - 28 Oct 2026, 12:00 UTC (diving exercise (both alternate areas) 281830-282100 JST OCT)
- 28 Oct 2026, 09:30 UTC - 28 Oct 2026, 12:00 UTC (alternate area 2, same period)
- Hazards
- diving exercise, restricted area around divers
- Keep clear
- 0.81 NMWITHIN 1500 METRES OF 35-05.5N 139-05.0E. ALTERNATE AREA. WITHIN 1500 METRES OF 35-04.7N 139-04.7E.
Coast stations for this area
- RCCMRCC NagoyaJapan27 NM from the area
- RCCMRCC YokohamaJapan35 NM from the area
- RCCMRCC KitakyushuJapan48 NM from the area
- DSCDSC Station ShimodaMRCC YokohamaJapanMMSI 004310301MF 150range 150 NM26 NM from the area
- DSCDSC Station ChikuraMRCC YokohamaJapanMMSI 004310301MF 150range 150 NM43 NM from the area
- DSCDSC Station Japan Coast GuardMRCC MaizuruJapanMMSI 004310001HF48 NM from the area
- DSCDSC Station Japan Coast GuardMRCC KagoshimaJapanMMSI 004310001HF48 NM from the area
- DSCDSC Station Japan Coast GuardMRCC KobeJapanMMSI 004310001HF48 NM from the area
Worked out automatically from the warning text on 27 Oct 2026, 07:47 UTC. It can be wrong: the official warning text is the authority.