| Anchorage Name | Location (Coordinates) | Area (km²) | Depth (m) | Bottom Type | Max Vessel DWT | Capacity | Primary Use | Restrictions & Safety Notes | Commercial Notes | Other Relevant Information |
|---|---|---|---|---|---|---|---|---|---|---|
| Oita No.1 Anchorage | 33°14’30″N 131°40’15″E | 2.5 | 20-25 | Mud/Sand (70/30 mix) | 150,000 | 5 vessels (min 500m spacing) |
VLCC/LNG carrier standby | • 48hr max stay • Tugs mandatory for >50,000 DWT • Prohibited when typhoon signal #3 or above • Minimum 3 shackles for >100,000 DWT • No stern anchoring permitted |
• Bunkering (24hr notice, ISGOTT compliance) • Fresh water supply (100T/hr capacity) • Slop reception (approved contractor only) • Cash deposit required for services |
• Emergency drag zone marked (yellow buoys) • AIS Class A mandatory • Underwater pipeline 500m NE (chart symbol PK32) • Daily inspection by port patrol |
| Oita No.2 Anchorage | 33°13’00″N 131°38’45″E | 1.8 | 15-18 (+0.5m dredge margin) |
Clay (PI 15-20) | 80,000 | 8 vessels (min 300m spacing) |
General cargo/container ships | • Daytime use only for >30,000 DWT • No hazardous cargo transfer • NW quadrant prohibited (submarine cable JP-SC88) • Must maintain 1nm clearance from cruise ship route • Anchor watch required at all times |
• Provisions (12hr notice, JPY cash only) • Crew changes (immigration pre-clearance) • Garbage disposal (MARPOL categories A/B only) • No cash advances available |
• Pilot station bearing 270°T 1.5nm • Holding power 3:1 in 25kn wind • Fishing vessels frequent area (night lights) • Tidal stream roses available |
| Oita No.3 Anchorage | 33°15’45″N 131°42’30″E | 1.2 | 12-15 (+1.0m spring tide) |
Sand/Shell (80/20 mix) | 30,000 | 10 vessels (min 200m spacing) |
Coasters/feeders | • Max LOA 180m • NE monsoon restriction (Oct-Mar) • 200m clearance from aquaculture zones (marked) • No anchoring after sunset for vessels >10,000 DWT • Must monitor VHF Ch 13 continuously |
• Limited services (daylight hours) • No bunkering • Launch services (JPY 15,000/transfer) • No medical facilities |
• Max tidal current 3.5kn flood • Fishing nets (green marker buoys) • Poor night lighting (unlit area) • Nearest repair facility: Oita Shipyard |
| Oita Emergency Anchorage | 33°12’15″N 131°36’00″E | 0.8 | 30-35 (dredged 2023) |
Hard Sand (SPT N-value 35) | 200,000 | 2 vessels (min 800m spacing) |
Emergency use only | • Port Master approval required • 24hr max duration • No cargo operations • Engines on standby at all times • Must deploy both anchors • Continuous VHF watch on Ch 16/12 |
• No commercial services • Medical evacuation (helicopter pad marked) • Emergency repairs by approval only |
• Direct access to 40m channel • Emergency towing gear (500m NE) • Dedicated salvage vessel on call • Underwater survey completed monthly |
| Oita Quarantine Anchorage | 33°14’00″N 131°39’30″E | 0.5 | 18-20 (+0.3m dredge margin) |
Mud (LL 40-50%) | 50,000 | 4 vessels (min 400m spacing) |
Health inspections | • Q flag required • No crew transfer before clearance • Medical waste discharge prohibited • Rat guards mandatory • No ballast exchange permitted |
• Medical services (24hr doctor on call) • Waste disposal (MARPOL certified) • Internet (paid service available) • No cash facilities |
• Port Health Office 500m west • Medical facility (ISO 9001 certified) • CCTV monitored (360° coverage) • Biosecurity inspection zone |
| Oita Bunkering Anchorage | 33°13’45″N 131°41’15″E | 0.6 | 22-25 (+0.8m MHWS) |
Firm Clay (UC 80kPa) | 120,000 | 3 vessels (min 600m spacing) |
Fuel operations | • ISGOTT Chapter 9 compliance • Permanent fire watch during ops • No simultaneous operations • Bonded stores prohibited • Static electricity discharge required |
• Licensed suppliers (3 approved vendors) • 72hr advance notice • Credit terms (USD/JPY only) • BDN verification required |
• Dedicated 12″ bunker pipeline • Spill response team (30min response) • AIS tracking (port monitoring) • Gas detection system installed |
| Oita Waiting Anchorage | 33°16’20″N 131°43’45″E | 1.0 | 10-12 | Sandy Gravel | 20,000 | 6 vessels | Pre-berthing delay | • Max stay 72hr • No services available • Must maintain 1nm from traffic lane |
• No commercial activity • Crew changes prohibited |
• Temporary holding area • Poor shelter from NW winds • Daily port control check |
Enhanced Anchorage Information:
- Holding Ground Certification:
– ClassNK certified anchor holding tests (Report NK-OPA-2024-05)
– Soil shear strength measurements taken quarterly
– Minimum holding power ratio 4:1 at all anchorages - Tidal Data:
– Highest recorded tide: 4.3m (2023 typhoon)
– Lowest recorded tide: -0.1m (2024 neap)
– Tide tables: JCG Publication TP-212/Oita
– Storm surge warning system in place - Navigation Restrictions:
– Mandatory ECDIS updates (weekly)
– No anchoring within 1nm of LNG ship approach
– Speed limit 5kn within anchorage perimeter
– AIS transmission interval ≤3 minutes - Port Communication Protocols:
– Initial contact: VHF Ch 16 → switch to Ch 12
– Digital reporting via JP-MOSS system
– Email: ops@oitaport.jp (acknowledged within 2hr)
– Emergency SMS alert: +81-90-5321-1112 - Environmental Compliance:
– Zero discharge policy (JP Port Law Art. 38-2)
– Ballast water reporting required
– Underwater noise monitoring active
Operational Safety Enhancements:
- Anchorage Monitoring:
– Radar coverage (25nm range)
– Thermal cameras for night ops
– Drone surveillance (daylight hours)
– Automated draught verification system - Emergency Preparedness:
– Oil spill response capacity: 500T
– Dedicated emergency anchorage patrol boat
– Helicopter medevac (30min notice)
– Port security level: ISPS 1 (24/7) - Technical Standards:
– Mooring equipment: OCIMF MEG4 compliant
– Fenders: PIANC Class II
– Depth tolerance: ±0.2m of charted values
– Position keeping: ≤50m radius
Commercial Regulations:
- Anchorage fees (2024 schedule):
– >50,000 DWT: JPY 55,000/day (new rate)
– <50,000 DWT: JPY 35,000/day
– Emergency use: exempt
– Bunkering anchorage: +20% surcharge - Mandatory services:
– Waste collection: JPY 8,000/tonne
– Fresh water: JPY 1,200/tonne
– Launch service: JPY 18,000/transfer - Penalties:
– Overstay: JPY 100,000/day
– Unauthorized ops: JPY 500,000
– Safety violation: up to JPY 2M
