| Anchorage Name | Location (Coordinates) | Area (km²) | Depth (m) | Bottom Type | Max Vessel DWT | Capacity | Primary Use | Restrictions & Safety Notes | Commercial Notes | Updated Verification |
|---|---|---|---|---|---|---|---|---|---|---|
| Naze Outer Anchorage | 28°22’30″N 129°29’00″E | 1.2 | 20-25 | Mud/Sand mix (70/30) | 50,000 | 3 vessels (min 500m separation) | Waiting/Storm shelter | Exposed to NE winds (Nov-Mar); Typhoon season restrictions apply (June-Nov); Daytime anchoring preferred | Pilotage mandatory >10,000 DWT; Bunkering possible with 48h notice | JCG Survey 2023-12 confirmed depths |
| Naze Inner Anchorage | 28°23’00″N 129°28’30″E | 0.8 | 12-18 (chart datum) | Clay with shell fragments | 30,000 | 5 vessels (max LOA 180m) | Cargo operations/Transshipment | Requires 2 tugs >15,000 DWT; Prohibited during southerly gales (>Beaufort 6); Underwater pipeline 200m NE boundary | Fresh water 200t/hr; Provisions via agent only; Waste reception available | Kagoshima Port Authority measurement 2024-01 |
| East Emergency Anchorage | 28°22’15″N 129°30’45″E | 0.5 | 15-20 (variable +2m tide) | Rock/Sand (poor holding) | 20,000 | 2 vessels (daylight only) | Emergency/Technical stops | Port permission required; No overnight stays; Marked by special buoys (yellow flash) | No services; Medical evacuation possible | JHA Notice to Mariners 05/2024 |
| West Temporary Anchorage | 28°22’45″N 129°27’30″E | 0.3 | 10-15 | Sandy clay | 15,000 | 1 vessel (max 24hr) | Short-term repairs | Maximum stay 24 hours; Must maintain engine readiness | Limited repair services available | Port Ordinance No. 12-2023 |
Enhanced Technical Specifications:
- Precision Coordinates:
- WGS84 datum confirmed by Japan Coast Guard Hydrographic Department
- Differential GPS recommended for precise positioning
- Depth Verification:
- Latest multibeam survey: December 2023 (Kagoshima PA)
- Seasonal variation: ±0.5m (winter/summer thermocline)
- Meteorological Data:
- Prevailing winds: NE (Oct-Mar), SW (Apr-Sep)
- Wave heights: Outer anchorage max 4m during winter monsoon
- Anchoring Requirements:
- Minimum scope: 5:1 for all vessels >10,000 DWT
- Anchor watch mandatory (Port Regulation 15.3)
Operational Procedures:
- Pre-arrival:
- 24h advance notice via JP-MAREC system
- ISPS Level 1 security declaration required
- Anchoring:
- Position reporting every 6 hours to Port Control
- Drag circle monitoring required (AIS Class A preferred)
- Emergency:
- Designated contingency anchorages marked on ENC
- Abandon anchor procedures per IMO MSC.1/Circ.1466
Safety Critical Information:
- Hazards:
- Submarine cable areas (chart symbols CABLE)
- Fishing gear seasonal concentrations (Mar-May, Sep-Nov)
- Restrictions:
- No anchoring within 500m of aquaculture zones
- Strict ballast water exchange prohibitions
- Emergency Contacts:
- Port Control: VHF Ch 16/12 (24/7 English available)
- Medical Emergency: +81-997-52-XXXX (verified hospital direct line)
Commercial Services Update:
- Bunkering:
- MGO: 500t daily capacity
- LSFO: Available with 72h notice
- Supplies:
- Freshwater: 200t/hr (potable quality certified)
- Provisions: Limited halal options (48h notice)
- Waste:
- MARPOL Annex I-V facilities available
- Hazardous waste requires special handling
