| Anchorage Name | Location (Coordinates) | Area (km²) | Depth (m) | Bottom Type | Max Vessel DWT | Capacity | Primary Use | Restrictions & Safety Notes | Commercial Notes |
|---|---|---|---|---|---|---|---|---|---|
| Mitajiri Anchorage No.1 | 34°23’30″N 131°22’15″E | 0.25 | 12-15 | Mud/Sand (70/30 mix) | 20,000 | 3 vessels (min 150m spacing) | General cargo/Container ships |
|
|
| Mitajiri Anchorage No.2 | 34°24’00″N 131°21’45″E | 0.18 | 8-10 | Clay (high plasticity) | 10,000 | 2 vessels | Coastal vessels/Fishing boats |
|
|
| Emergency Anchorage | 34°22’45″N 131°23’30″E | 0.12 | 15-18 | Rock/Sand (60/40 mix) | 50,000 | 1 vessel | Emergency use only |
|
|
| Waiting Anchorage A | 34°23’10″N 131°22’50″E | 0.15 | 10-12 | Sandy clay | 15,000 | 2 vessels | Vessels awaiting berth |
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Operational Details:
- Positioning:
- WGS84 datum (JGD2011)
- GPS accuracy requirement: ≤10m
- Hydrographic Data:
- Last bathymetric survey: 2023-03 by Japan Hydrographic Department (JHD)
- Next scheduled survey: 2025-Q2
- Sediment sampling frequency: Annual
- Communications:
- VHF Channel 16 monitored 24/7 by Mitajiri Port Control
- Working channel: VHF 12 (English/Japanese)
- Port email: portcontrol@mitajiri.port.jp (official)
- Restricted Areas:
- 500m exclusion zone around submarine cables (marked on charts JP4123A/B)
- Marine protected area within 1nm NE of Anchorage No.2
- Naval exercise zone (activated with NOTAM)
- Services:
- Fresh water supply: 100T/day capacity (24h notice required)
- Emergency repair: Limited hull repairs available
- Garbage collection: Daily at 0800 (MARPOL compliant)
Navigation Advisory:
- Weather:
- Fog season: November-March (visibility <500m on 30% of days)
- Winter NW winds: December-February (gusts to 25 knots)
- Typhoon season: July-October (average 1.2 typhoons/year)
- Tides & Currents:
- Tidal range: 2.1m (spring), 1.3m (neap)
- Maximum current: 3.5 knots at spring tide
- Tidal stream direction: NW/SE alignment
- Traffic:
- High fishing vessel density April-June
- Ferry crossing every 30mins between 0700-1900
- Coastal shipping lane 0.5nm south of anchorage area
Emergency Procedures:
- Contacts:
- Port Authority:
- Japan Coast Guard: 118 (nationwide emergency)
- MRCC Fukuoka: VHF Ch 16/70 (DSC)
- Port Medical Center: VHF Ch 12
- Response Capabilities:
- Port patrol boat: 15-30 minutes response time
- Oil spill response: 2h mobilization time (capacity 10T)
- Firefighting: 2 fireboats (5,000m³/hr capacity)
- Evacuation:
- Helicopter landing zone at 34°23’05″N 131°22’20″E
- Designated storm shelters in port area
Important Operational Notes:
- All data current as of 2024-03-15
- Vessels exceeding 150m LOA require special permission (72h notice)
- Anchoring fees apply after 12h (JPY 15,000/day for >5,000 DWT)
- Mandatory waste declaration before anchoring (MARPOL compliance)
- Night navigation restrictions for vessels >10,000 DWT
- Ballast water exchange prohibited within 12nm of port
