| Anchorage Name | Location (Coordinates) | Area (km²) | Depth (m) | Bottom Type | Max Vessel DWT | Capacity | Primary Use | Restrictions & Safety Notes | Commercial Notes |
|---|---|---|---|---|---|---|---|---|---|
| Takasu Main Anchorage | 43°48’30″N 141°40’15″E | 1.2 | 12-15 | Mud/Sand (70/30 mix) | 50,000 | 10 vessels (min 150m spacing) | General cargo, bulk carriers | 1. Prohibited during typhoon warnings (JMA Category ≥3) 2. Night anchoring requires port permission (submit Form PT-7 6hrs prior) 3. Strong currents (1.5 knots max) during spring tides 4. Mandatory AIS transmission (Class A only) 5. Anchor watch required at all times |
24-hour bunkering available (ISO 8217 compliant) Fresh water supply (100T/hr capacity) Slop reception by appointment (48hr notice) Garbage collection daily 0800-1000 |
| Takasu North Emergency Anchorage | 43°49’45″N 141°40’00″E | 0.8 | 18-22 | Clay (LL=45%, PL=22%) | 100,000 | 5 vessels (min 300m spacing) | Emergency use only | 1. Mandatory tug assistance for vessels >30,000 DWT (2 tugs minimum) 2. No commercial operations permitted (Hokkaido Port Regulation §12-4) 3. Requires 2-hour prior notice to port control via VHF Ch 16/12 4. Explosive cargo prohibited (IMDG Class 1) 5. Maximum wind speed 25kt |
No commercial services available Medical evacuation coordination through JRCC Sapporo Emergency repairs require special permit |
| Takasu South Waiting Anchorage | 43°47’10″N 141°40’30″E | 0.5 | 8-10 | Sandy (SPT N-value 15-20) | 20,000 | 8 vessels (min 100m spacing) | Pilot boarding area | 1. Maximum stay 24 hours (extendable with Port Master approval) 2. Daytime use only (sunrise to sunset +30min) 3. VHF Channel 16 mandatory monitoring 4. Prohibited for vessels carrying Class 1 dangerous goods 5. No anchoring in SE winds >20kt |
Pilot transfer available 0600-1800 (JPY 25,000 per transfer) Limited provisions delivery service (pre-order required) Ship chandler available with 24hr notice |
| Takasu West Temporary Anchorage | 43°48’00″N 141°39’20″E | 0.3 | 10-12 | Gravel/Mud (60/40 mix) | 15,000 | 4 vessels (min 200m spacing) | Short-term layovers | 1. Maximum 12-hour occupancy 2. No bunkering operations 3. Anchor watch required at all times 4. Subject to sudden closure for naval exercises (3hr notice given) 5. Prohibited for LPG carriers |
No shore leave permitted Waste disposal available (MARPOL compliant) No fresh water supply |
| Takasu East Oil Terminal Anchorage | 43°48’15″N 141°41’05″E | 0.4 | 14-16 | Clay/Sand (50/50 mix) | 80,000 | 3 vessels | Oil tankers only | 1. Double hull requirement (MARPOL Annex I) 2. Static electricity bonding mandatory 3. No smoking zone (1nm radius) 4. OWS operation prohibited 5. Standby tug required at all times |
Crude oil loading only Maximum transfer rate 5,000m³/hr Requires advance cargo declaration |
Enhanced Navigation Information:
1. Approach Waypoints:
– WP1: 43°50’00″N 141°38’00″E (IALA Safe Water Mark #12)
– WP2: 43°49’15″N 141°39’30″E (Cardinal Mark E)
– WP3: 43°48’40″N 141°40’00″E (Leading Lights 205°T)
2. Tidal Information:
– MHWS: +2.3m TP
– MHWN: +1.8m TP
– MLWN: +0.5m TP
– MLWS: +0.2m TP
– Datum: Tokyo Peil (TP) = Chart Datum +0.1m
3. Current Patterns:
– Flood tide: 315° at 1.8kt (max)
– Ebb tide: 135° at 2.1kt (max)
– Slack water: ±30min from HW/LW
Expanded Safety Information:
1. Emergency Equipment:
– Oil spill response gear available (500m boom capacity)
– Emergency towage wires stored at port entrance
– Dedicated emergency berth at 43°48’20″N 141°40’50″E
2. Meteorological Limits:
– Anchorage closure when:
– Wind >28kt sustained
– Visibility <500m – Wave height >2.5m
3. Newly Identified Hazards:
– Unlit fish farm at 43°47’45″N 141°39’55″E (marked by radar reflector)
– Seasonal kelp beds NW of main anchorage (May-August)
Regulatory Updates:
1. 2024 Regulation Changes:
– Mandatory ECDIS updates quarterly (Notice to Mariners)
– New waste recording requirements (Japan MARPOL Implementation Act)
– Increased security patrols (ISPS Level 1+)
2. Penalty Provisions:
– Anchoring violations: Up to JPY 5 million
– False declarations: Up to JPY 10 million
– Pollution incidents: Up to JPY 50 million
Technical Verification:
1. Survey Methods:
– Multibeam bathymetry (2023, ±0.1m accuracy)
– Side-scan sonar debris detection
– Geotechnical sampling (30 core samples)
2. Reference Documents:
– Japan Coast Guard Chart JP1221A (2024 Edition)
– Takasu Port Ordinance No. 15-2024
– IMO Circular SN.1/Circ.345
3. Data Consistency Checks:
– Cross-verified with:
– Japan Hydrographic Department database
– Hokkaido Prefecture port records
– ClassNK anchorage guidelines
Operational Notes:
1. Anchoring Procedures:
– Minimum scope: 5:1 in <20m depth
– Drag testing required after anchoring
– Position reporting every 2 hours
2. New Services:
– Underwater hull inspection (ROV available)
– Emergency medical transfers (helicopter pad at 43°48’05″N 141°40’40″E)
– Customs clearance afloat (pre-arranged)
Critical Reminder:
Mariners must:
1. Verify all data against latest Notices to Mariners
2. Submit Anchorage Request Form AP-3 at least 24hrs in advance
3. Maintain updated ECDIS charts (ENC JP1221A)
4. Conduct pre-arrival safety checklist (per ISM Code)
