| Anchorage Name | Location (Coordinates) | Area (km²) | Depth (m) | Bottom Type | Max Vessel DWT | Capacity | Primary Use | Restrictions & Safety Notes | Commercial Notes |
|---|---|---|---|---|---|---|---|---|---|
| Hiroshima Anchorage No.1 | 34°20’00″N, 132°25’00″E | 0.8 | 10-15 | Mud/Sand | 50,000 | 5 vessels | General cargo/Container ships | Limited swing room, tidal currents up to 2 knots Minimum holding power: 3:1 scope required |
Priority given to vessels with scheduled berthing Daytime operations preferred |
| Hiroshima Anchorage No.2 | 34°19’30″N, 132°26’00″E | 1.2 | 12-18 | Clay/Mud | 80,000 | 3 vessels | Bulk carriers | Strong currents during spring tides (max 3.5 knots) Anchoring prohibited within 500m of submarine cables |
Coal and iron ore transshipment Bunkering available with prior notice |
| Hiroshima South Anchorage | 34°18’00″N, 132°27’00″E | 2.5 | 15-20 | Sand/Shell | 150,000 | 2 vessels | VLCC/LNG carriers | Requires pilotage, restricted during typhoons Emergency towing arrangement mandatory |
Energy product handling Requires 72-hour pre-arrival notice |
| Ujina Anchorage | 34°21’12″N, 132°27’36″E | 1.5 | 8-12 | Sandy clay | 30,000 | 6 vessels | Coastal vessels/Ferries | Daylight operations only Prohibited for vessels >200m LOA |
RO-RO operations Passenger vessel priority |
Additional Information:
1. Tidal Information:
– Mean tidal range: 2.5m (max 3.8m during spring tides)
– Maximum tidal current: 3.5 knots (spring tide)
– Tide tables: Japan Coast Guard Notice to Mariners No.12/2023
2. Pilotage:
– Compulsory for vessels over 500 GT
– Available 24/7 with 2 hours notice
– Pilot boarding area: 34°19’00″N, 132°28’00″E
– Pilot ladder requirements: SOLAS compliant, minimum 9m freeboard
3. Weather Restrictions:
– Anchorage closed when winds exceed 25m/s
– Typhoon season precautions (July-October)
– Wave height limitation: 2.5m for cargo operations
– Visibility minimum: 1nm for vessel movement
4. Navigation Warnings:
– Fishing nets present in surrounding waters (marked by buoys)
– High vessel traffic density in approach channels
– Prohibited areas within 500m of Miyajima Island
– Underwater pipelines marked by special buoys (yellow)
5. Port Services:
– Bunkering: Available at all anchorages (24hr notice)
– Fresh water: Available via barge
– Garbage disposal: Compulsory MARPOL compliance
– Provisions delivery: Available with 12hr notice
6. Emergency Procedures:
– VHF Ch.16/12 for distress calls
– Designated storm anchorages: 34°17’00″N, 132°30’00″E
– Oil spill response equipment available within 2hrs
– Medical evacuation: Helicopter landing zone at Ujina
Critical Notes for Safe Operations:
1. All coordinates refer to WGS84 datum (EPSG:4326)
2. Depths are charted depths at LAT (Lowest Astronomical Tide)
3. Capacity may vary during maintenance operations (check NOTAMs)
4. Continuous VHF watch required on Ch.16 (secondary Ch.12)
5. Anchoring positions subject to change due to dredging operations
6. Mandatory AIS transmission within port limits
7. Nighttime illumination requirements for anchored vessels
8. Prohibited discharge zones within 3nm of anchorage areas
9. Mandatory anchor watch during all operations
10. Typhoon contingency plans must be filed 24hr in advance
