| Anchorage Name | Location (Coordinates) | Area (km²) | Depth (m) | Bottom Type | Max Vessel DWT | Capacity | Primary Use | Restrictions & Safety Notes | Commercial Notes |
|---|---|---|---|---|---|---|---|---|---|
| Ube Outer Anchorage | 33°56’30″N, 131°15’00″E | 1.2 | 15-20 | Mud/Sand | 50,000 | 3 vessels | 1. Waiting area 2. Emergency shelter 3. Vessel inspection |
1. NW wind exposure (Nov-Mar) 2. Typhoon season restriction (Jun-Nov) 3. 0.5nm clearance from submarine pipeline 4. Mandatory anchor watch 5. Prohibited for chemical tankers |
1. Pilotage compulsory (>10,000 DWT) 2. Bunkering (48h notice) 3. Fresh water available 4. Maximum stay 7 days |
| Ube Inner Anchorage A | 33°55’15″N, 131°14’30″E | 0.8 | 12-15 | Clay | 30,000 | 2 vessels | 1. Bunkering 2. Minor repairs 3. Crew changes |
1. 300m swing radius 2. Tugs required (>20,000 DWT) 3. Tide difference restriction (>2m) 4. Night navigation prohibited 5. Mandatory fender deployment |
1. 24h bunker notice 2. Fresh water supply 3. Slop reception available 4. Garbage collection service |
| Ube Inner Anchorage B | 33°54’45″N, 131°13’50″E | 0.5 | 10-12 | Sand | 20,000 | 1 vessel | 1. Coastal vessels 2. Fishing boats 3. Small crafts |
1. LPG carrier prohibition 2. Daylight only (0600-1800 JST) 3. Port clearance required 4. No anchoring in marked zones 5. Speed limit 5 knots |
1. No commercial services 2. 72h maximum stay 3. No waste discharge 4. No fresh water supply |
| Ube Emergency Anchorage | 33°57’00″N, 131°16’15″E | 1.5 | 18-25 | Rock/Mud | 80,000 | 2 vessels | 1. Typhoon shelter 2. Emergency repairs 3. Medical evacuation |
1. Port Control activation 2. 4-point mooring 3. Stand-by engine 4. Continuous radio watch 5. Priority for distressed vessels |
1. No commercial ops 2. >50,000 DWT priority 3. No bunkering 4. Emergency supplies only |
| Ube Temporary Anchorage | 33°55’50″N, 131°15’20″E | 0.3 | 8-10 | Sand/Clay | 10,000 | 1 vessel | 1. Short-term waiting 2. Customs inspection 3. Port formalities |
1. 24h maximum stay 2. No cargo operations 3. No bunkering 4. Daytime only 5. No hazardous materials |
1. Pilot transfer available 2. No provisions 3. Water taxi service |
Enhanced Navigation Information:
1. Tidal and Current Data:
– Spring tide range: 2.8m (MHWS 3.2m, MLWS 0.4m)
– Neap tide range: 1.2m (MHWN 2.0m, MLWN 0.8m)
– Maximum current: 3.2 knots at 33°55’10″N, 131°14’20″E (flood tide)
– Slack water duration: 20-30 minutes
2. Prohibited and Restricted Areas:
– Coral protection zone: 33°55’00″N – 33°55’30″N (yellow buoys)
– Naval restricted area: 500m radius from 33°56’00″N, 131°15’30″E
– Fishing exclusion zone: 1nm around aquaculture areas
– Dredging area: 33°54’00″N – 33°54’30″N (marked by red buoys)
3. Meteorological Conditions:
– Prevailing winds: NW (Nov-Mar, avg 15kt), SE (Jun-Aug, avg 10kt)
– Storm frequency: 2-3 typhoons/year (Jun-Nov)
– Fog occurrence: 15 days/year (mainly Apr-May)
– Visibility restrictions: <1nm requires anchoring halt
4. Regulatory Framework:
– Anchoring procedures: IMO A.1045(27) + Japan MSA Ordinance No.30
– AIS requirements: IMO MSC.1/Circ.1252 (continuous transmission)
– Environmental compliance:
– Ballast water: Japan MERA Ordinance No.38 (12nm limit)
– Waste disposal: MARPOL Annex V (special area rules)
– Security measures: ISPS Code Level 1 implementation
5. Emergency Response:
– VHF Channels: 16 (distress), 12 (Port Control), 14 (tugs)
– Oil spill response: Nippon Oil Response Co. (JCG-approved)
– Medical evacuation: Yamaguchi Prefecture EMS Protocol
– Search and rescue: Japan Coast Guard Sector Shimonoseki
Operational Procedures:
1. Anchoring Protocol:
– Minimum scope: 5:1 (normal), 7:1 (storm conditions)
– Drag monitoring: Required for all vessels >5,000 DWT
– Position verification: Hourly GPS checks mandatory
2. Vessel Requirements:
– Anchor certification: ClassNK or equivalent standard
– Mooring equipment: Minimum 4 lines for >20,000 DWT
– Communication: VHF and satellite phone backup
3. Service Availability:
– Bunkering: IFO380, MGO, LNG (48h notice)
– Provisions: Delivery within 24h (certified suppliers)
– Technical services: Limited repair capability
Critical Notices:
1. Safety Warnings:
– Uncharted wrecks reported at 33°55’42″N, 131°14’18″E
– Strong currents near breakwater entrance
– Frequent small craft traffic in inner harbor
2. Environmental Restrictions:
– No anchoring in seagrass beds (marked areas)
– Strict ballast water reporting requirements
– Zero discharge policy for all wastes
3. Commercial Regulations:
– Mandatory agency representation for foreign vessels
– Customs clearance required before anchoring
– Port dues apply after 24h free period
