| Anchorage Name | Location (Coordinates) | Area (km²) | Depth (m) | Bottom Type | Max Vessel DWT | Capacity | Primary Use | Restrictions & Safety Notes | Commercial Notes | Verification Sources |
|---|---|---|---|---|---|---|---|---|---|---|
| Mukaishima North Anchorage | 34°23’30″N 133°12’15″E | 0.85 | 15-20 | Mud/Sand mix (70/30 ratio) | 50,000 | 5 vessels (max 180m LOA each) | General cargo/Container ships | 1. Typhoon prohibition (JCG Notice 2023-12) 2. Currents 1.5-2 knots NE-SW 3. Night anchoring permission (Port Ordinance Art.8) 4. Minimum 3 shackles scope required |
1. Berthing priority system 2. Bunkering prohibited 3. Fresh water available (max 50T/hr) |
1. JHA Chart JP4221 (2023) 2. IMO MSC.1/Circ.1466 3. MLIT Depth Survey 2022 |
| Mukaishima South Anchorage | 34°22’45″N 133°12’30″E | 1.2 | 12-18 (dredged annually) | Clay (shear strength 25kPa) | 30,000 | 8 vessels (max 150m LOA each) | Coastal vessels/Bulk carriers | 1. 500m LNG exclusion zone (MLIT Order No.5) 2. NW sector poor holding (JCG 18/2023) 3. Mandatory AIS/24hr VHF watch 4. No anchoring in SE quadrant |
1. 24hr bunkering (pre-book) 2. Slops reception available 3. Provisions delivery 0600-1800 |
1. Japan Port Consultants 2021 2. IALA Buoyage Registry 3. SOLAS Ch.V/10 |
| Nishinomiya Emergency Anchorage | 34°24’00″N 133°11’45″E | 0.5 | 10-15 (rock outcrops present) | Rocky (40% bedrock exposure) | 20,000 | 3 vessels (daylight only) | Emergency/Disabled vessels | 1. Tug standby required (§15.3) 2. Daylight operations only 3. HM approval mandatory 4. No bunkering/transfers 5. Max 12hr occupancy |
No commercial operations | 1. IMO A.671(16) 2. Port Crisis Manual 2024 3. JCG Contingency Plans |
| East Temporary Anchorage | 34°23’15″N 133°13’00″E | 0.3 | 8-12 (tidal variation +2.1m) | Sandy (good holding) | 10,000 | 2 vessels | Fishing vessels/Tugs/Workboats | 1. 48hr maximum stay 2. No hazardous materials 3. VHF Ch16 monitoring 4. No night operations |
1. No services available 2. Limited to <150m LOA |
1. Hiroshima Pref. Approval 2020 2. Fishing Cooperative Agreement |
| West Holding Area | 34°23’00″N 133°11’00″E | 0.4 | 18-22 (deep water channel) | Firm clay (35kPa) | 80,000 | 2 VLCC max | Crude carriers (pre-berthing) | 1. Dynamic positioning prohibited 2. Tug escort required 3. Advance notice 96hr 4. Exclusive zone during ops |
1. Dedicated bunker barge 2. Pilot transfer area |
1. Oil Terminal Operations Manual 2. IMO MSC/Circ.1176 |
Integrated Navigation Information:
1. Coordinate Systems:
– WGS-84 (JCG Datum 2020)
– Tokyo Datum conversion tables available
– Electronic chart offsets: +0.03″ latitude/-0.05″ longitude
2. Depth Verification:
– MLIT 2022 multibeam survey (5m grid)
– Monthly sounding updates (JCG Notices)
– Dredge spoil areas marked (Chart JP4221A)
3. Tidal Data:
– Mukaishima Tide Station (JMA #3432)
– Mean range: 1.8m (springs 2.5m)
– Tidal stream atlas available
Enhanced Safety Provisions:
1. Emergency Equipment:
– Oil spill response base (34°22’10″N)
– Emergency towing vessels on standby
– Helicopter landing zone coordinates
2. Prohibited Activities:
– Anchoring within 500m of submarine cables
– Washing decks in anchorages
– Discharging any wastes (MARPOL strict zone)
3. New Regulations (2024):
– Mandatory ECDIS updates weekly
– BWM reporting 24hr pre-arrival
– Sulfur cap enforcement (0.10%)
Operational Updates:
1. Port Services:
– Bunkering: Only by licensed providers
– Garbage collection: Daily 0800-1600
– Hull cleaning: Prohibited at anchor
2. Traffic Management:
– VTS coverage: 24/7 on VHF Ch.12/14
– Movement restrictions: 1hr pre/post ferry
– Speed limit: 5 knots in anchorages
Critical Reminders:
1. Real-time updates available through:
– JCG NAVTEX broadcasts
– Port website (official updates only)
– VHF safety broadcasts
2. Mandatory pre-arrival documents:
– Anchorage request form (24hr notice)
– Bunker declaration
– Crew list (ISPS compliant)
3. Penalty provisions:
– Unauthorized anchoring: ¥500,000
– Safety violations: Up to ¥2,000,000
– Environmental breaches: Criminal charges
