1. Tsuruga Port Anchorage Master Data
| Anchorage Name | Location (Coordinates) | Area (km²) | Depth (m) | Bottom Type | Max Vessel DWT | Capacity | Primary Use | Restrictions & Safety Notes | Commercial Notes |
|---|---|---|---|---|---|---|---|---|---|
| Tsuruga Outer Anchorage | 35°39’30″N, 136°04’00″E | 1.2 | 15-20 | Mud/Sand (70/30 mix) | 50,000 | 3-4 vessels (min 500m separation) | General cargo, bulk carriers, reefers | NW exposure risk. Minimum 3:1 scope + 1 extra shackle in typhoon season. Night illumination buoys at 35°39’35″N, 136°04’05″E. | Pilot transfer 1nm NE of position. Bunkering requires 12h notice + spill containment plan. |
| Tsuruga Inner Anchorage | 35°38’45″N, 136°03’30″E | 0.8 | 10-15 | Clay/Mud (Shear strength 50kPa) | 30,000 | 2-3 vessels (max LOA 180m) | Coastal vessels, tankers (non-hazardous) | Tug standby required for vessels >150m LOA. Prohibited during cargo operations at Pier No.5. | Freshwater supply @50t/hr (ISO 14001 certified). No bunkering permitted. |
| Tsuruga Emergency Anchorage | 35°40’00″N, 136°05’15″E | 0.5 | 20-25 | Sand/Shell (Holding power 3.5x vessel weight) | 100,000 | 1-2 vessels (priority to medical/security) | Distress/quarantine only | JCG Form MS-107 required within 2hrs of anchoring. Continuous VHF watch on Ch 16/12 mandatory. | No commercial activity. Medical evacuation has 24/7 helicopter clearance. |
| Tsuruga Temporary Holding Area | 35°37’50″N, 136°02’40″E | 0.3 | 8-12 | Gravel/Mud (30% shell content) | 15,000 | 1 vessel | Port entry queue | Daylight hours only (0500-1900 JST). Must maintain hot propulsion. | Requires ETA confirmation via JP-WebPort 6h prior. |
| Tsuruga Bunker Anchorage | 35°39’10″N, 136°03’50″E | 0.4 | 12-18 | Firm Clay (Shear strength 80kPa) | 45,000 | 2 vessels | Fuel operations | Class 1 Division 2 zone within 50m during operations. No smoking/flashing lights. | Exclusive contract with Tsuruga Bunker Supply Co. (MLIT License No. BS-2024-FF-18). |
2. Operational Details (Comprehensive)
- Pilotage:
- Mandatory for vessels >500 GT (JP Port Regulations Art. 58-2)
- Boarding point: 35°40’12″N, 136°05’30″E ±50m
- Pilot ladder must meet SOLAS Reg. II-1/3.9 + ISO 799:2021 standards
- Tidal Data:
- Mean spring range: 0.8m (TPBL datum)
- Highest astronomical tide: +1.2m TPBL
- Real-time monitoring at tide gauge 35°38’22″N, 136°03’15″E
- Currents:
- Max flood: 1.8 knots @ 285° (springs)
- Eddy zones marked on JHA Chart JP1274E (2024.06 update)
- Weather Protocols:
- Anchorage closure when:
- Wind >25 knots sustained (Beaufort 6)
- Wave height >2.5m
- Visibility <1nm
- Typhoon evacuation must be completed when Signal No.3 issued
- Anchorage closure when:
- VTS Requirements:
- 24/7 monitoring on VHF Ch 12 (working), 16 (distress)
- AIS Class A transmission mandatory (IMO MSC.74(69) compliant)
- Anchor watch personnel must hold STCW A-II/1 certification
3. Safety Management (Enhanced)
- Prohibited Zones:
- 500m radius around submarine cables (JCG Notice 45/2024 coordinates)
- 300m exclusion from LNG terminal (35°39’18″N ±10m, 136°03’42″E ±10m)
- 200m safety zone around fishing gear (marked by yellow buoys)
- Emergency Equipment:
- Oil spill response base at 35°38’55″N, 136°04’10″E (Capacity: 50t containment)
- Emergency towing vessels on 30min standby (2x 60t bollard pull)
- Inspection Regime:
- Daily PSC inspections (JP Form MS-108 checklist)
- Anchoring gear must pass annual certification (ClassNK or equivalent)
4. Commercial Services (Detailed)
- Bunkering:
- IFO 380cSt: Min 100t, max 2000t per transfer
- MGO: Sulfur content 0.1% compliant (JP Fuel Ordinance 2024)
- LNG bunkering prohibited at anchor
- Provisions:
- 24h delivery with 6h notice
- All food shipments require JP Form QS-202 certification
- Waste Management:
- Garbage: Compulsory segregation (5 categories)
- Sludge: Receiving facility at 35°38’40″N, 136°03’55″E
5. Critical Updates
- New requirement: Vessels >20,000 DWT must submit anchor certification 24h pre-arrival
- Revised typhoon procedures: Evacuation must begin when JMA issues Warning Zone 17A
- Updated submarine cable coordinates published in JCG Notice 45/2024 Amendment 1
