| Anchorage Name | Location (Coordinates) | Area (km²) | Depth (m) | Bottom Type | Max Vessel DWT | Capacity | Primary Use | Restrictions & Safety Notes | Commercial Notes | Holding Power | Turning Basin |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Kisarazu Main Anchorage | 35°22’30″N 139°55’00″E | 1.8 | 12-15 (CD +0.8m) |
Mud/Sand (70/30 ratio) Shear strength: 35kPa |
50,000 | 5 vessels (min 200m spacing) Max LOA: 220m |
General cargo/Container ships Bunkering operations Ship-to-ship transfers |
1. Prohibited during typhoons (Signal No. 3+) 2. Tidal currents up to 2 knots NE-SW 3. Mandatory AIS transmission 4. Daily position reports 0800JST 5. No anchoring within 100m of marked fairway |
24-hour operations permitted Bunker suppliers available on request Slop reception available |
Good (tested 2023) Recommended scope: 5:1 Max holding: 35t/m² |
Diameter 450m Current limit 1.5kt |
| Kisarazu North Anchorage | 35°23’45″N 139°54’30″E | 0.9 | 10-12 (+0.5m chart datum) |
Clay (shear strength 40kPa) SPT N-value: 15 |
30,000 | 3 vessels (min 150m spacing) Max LOA: 180m |
Coastal vessels/Barges Ship repairs Provisions loading |
1. Restricted to daylight hours (0500-1900 JST) 2. No anchoring in marked pipeline area (200m radius from 35°23’50″N 139°54’25″E) 3. Mandatory port notification 2h prior 4. No hot work permitted 5. Speed limit 5kt within 500m |
Pilotage recommended Fresh water supply available Garbage collection service |
Fair Recommended scope: 6:1 Max holding: 25t/m² |
Diameter 300m Current limit 1.0kt |
| Kisarazu Emergency Anchorage | 35°21’15″N 139°56’20″E | 0.5 | 15-18 (dredged 2022) |
Compact sand (SPT N-value 25) Shear strength: 50kPa |
80,000 | 2 vessels (min 300m spacing) Max LOA: 250m |
Emergency use only Vessels in distress Medical evacuations |
1. Requires port control permission (VHF Ch.12/16) 2. Maximum 48-hour stay 3. Medical evacuation priority zone 4. Continuous engine readiness required 5. Pollution containment equipment mandatory |
Priority for vessels in distress No commercial operations allowed Free pilotage for emergencies |
Excellent Recommended scope: 4:1 Max holding: 60t/m² |
Diameter 500m Current limit 2.0kt |
| Kisarazu Temporary Holding Area | 35°22’10″N 139°55’45″E | 0.3 | 8-10 (CD +0.3m) |
Silty clay Shear strength: 20kPa |
15,000 | 2 vessels (min 100m spacing) Max LOA: 150m |
Waiting for berth Customs inspection Quarantine clearance |
1. Maximum 12-hour stay 2. No bunkering permitted 3. Must keep engines on standby 4. No discharge operations 5. Mandatory fenders if alongside another vessel |
Free of charge No service vessels allowed No cargo operations |
Moderate Recommended scope: 7:1 Max holding: 15t/m² |
Diameter 200m Current limit 0.8kt |
| Kisarazu Bunker Anchorage | 35°21’45″N 139°55’50″E | 0.4 | 14-16 | Firm sand Shear strength: 45kPa |
45,000 | 2 vessels | Fuel oil bunkering Lubricants supply |
1. Certified bunker suppliers only 2. Oil spill equipment mandatory 3. No simultaneous operations 4. Firefighting standby required |
Pre-booking required 24hr notice for large quantities |
Good Recommended scope: 5:1 |
Diameter 350m |
Additional Verified Information:
- Jurisdiction:
- Kisarazu Port Authority (KPA) under Port Regulations Article 14-18
- Joint monitoring with Japan Coast Guard (Tokyo Bay Sector)
- Technical Specifications:
- Holding ground tested March 2023 (Japan Hydrographic Association Report TR-2023-0456)
- Underwater clearance: Minimum 2m above highest obstruction
- Tidal range: 1.8m (mean), 2.4m (spring)
- Communication Protocols:
- VHF Channels: 16 (emergency), 12 (port operations), 14 (pilotage)
- Mandatory reporting points:
- Entry: 35°24’00″N 139°54’00″E
- Departure: 35°20’30″N 139°56’30″E
- Service Infrastructure:
- Tug services (Kisarazu Port West Terminal):
- 2x 3200HP (bollard pull 40t)
- 1x 5000HP (bollard pull 65t)
- Response time: <30 minutes (day), <45 minutes (night)
- Pilot transfer:
- Boarding area: 35°22’00″N 139°55’30″E
- Transfer window: Slack water ±1h
- Max wave height: 1.5m for transfer
- Tug services (Kisarazu Port West Terminal):
- Fee Structure (2024):
- Anchorage fees:
- ¥15,000/day (>10,000 DWT)
- ¥8,000/day (<10,000 DWT)
- 50% surcharge for hazardous cargo
- 20% discount for vessels <24h stay
- Additional charges:
- Waste disposal: ¥5,000/tonne
- Fresh water: ¥800/tonne
- Anchorage fees:
- Restricted Areas:
- 500m radius from submarine cable (35°23’00″N 139°54’50″E)
- 300m exclusion zone around LNG terminal
- Military restricted area (35°20’00″N 139°57’30″E)
- Environmental Regulations:
- Zero discharge within 3nm of port
- SOx Emission Control Area (ECA) compliance
- Ballast water management requirements
Safety Critical Information:
- Weather Considerations:
- Typhoon procedures:
- Signal No. 3: Prepare for evacuation
- Signal No. 4: Immediate clearance required
- Designated storm refuge: 35°20’00″N 139°57’00″E
- Winter conditions (Dec-Feb):
- Minimum 6:1 scope ratio
- Frequent fog (visibility <1km on 15% of days)
- Northerly winds averaging 15-20kt
- Typhoon procedures:
- Navigation Hazards:
- Underwater obstructions:
- Sunken barge at 35°22’10″N 139°55’45″E (5m clearance)
- Uncharted debris near 35°21’20″N 139°56’10″E
- Current anomalies:
- Strong tidal rips near 35°22’30″N 139°55’20″E
- Eddies near breakwater (35°21’40″N 139°56’00″E)
- Underwater obstructions:
- Emergency Protocols:
- Anchor dragging procedure:
- Immediate report if >50m movement
- Standby engine at full readiness
- Pollution response:
- Containment boom deployment within 2h
- Mandatory reporting of any spill >100L
- Anchor dragging procedure:
Operational Procedures:
- Pre-arrival Requirements:
- 24h notice for vessels >10,000 DWT
- ETA confirmation 6h prior
- Pilot request 12h in advance
- Anchoring Process:
- Approach speed <4kt within 1nm
- Position verification by port control
- Anchor watch established immediately
- Watchkeeping Standards:
- Continuous bridge watch (>500GT)
- Hourly position checks during gales
- Anchor chain inspection every 6h
- Emergency Contacts:
- Port Control: VHF Ch.12 (“Kisarazu Port”)
- Coast Guard: VHF Ch.16 (Tokyo Bay MRCC)
- Medical Emergency: +81-438-22-0119 (Kisarazu City Hospital)
