1. Port Dolphins
| Dolphin Name | Location (WGS84) | Function | Construction | Max Bollard Load (tonnes) | Fender Type | Last Inspection | Note |
|---|---|---|---|---|---|---|---|
| North Dolphin | 33°04’12″N 131°52’18″E | Mooring support for bulk carriers | Reinforced concrete | 150 | Yokohama W400 | 2023-05-15 | Equipped with quick-release hooks, night lighting |
| South Dolphin | 33°03’45″N 131°52’30″E | Mooring support for cement carriers | Steel pile | 100 | Yokohama W300 | 2023-04-20 | Dedicated power supply for ship connections |
| East Approach Dolphin | 33°04’50″N 131°53’15″E | Navigation aid/emergency mooring | Concrete caisson | N/A | N/A | 2023-06-10 | Radar reflector (RACON), AIS station ID: JPTSK001 |
| West Channel Dolphin | 33°04’05″N 131°51’45″E | Tug mooring point | Steel jacket | 50 | Cell fender | 2023-03-28 | Reserved for port service vessels |
2. Mooring Buoys
| Buoy ID | Location (WGS84) | Max Vessel Size (DWT) | Primary Use | Holding Capacity | Light Characteristic | Maintenance Authority |
|---|---|---|---|---|---|---|
| MB-1 | 33°04’30″N 131°53’00″E | 50,000 | Transshipment anchorage | 200t chain + 10t sinker | Fl Y 6s | Oita Prefecture Port Authority |
| MB-2 | 33°05’00″N 131°52’00″E | 30,000 | Waiting area | 150t chain + 8t sinker | Fl R 4s | Oita Prefecture Port Authority |
| MB-3 | 33°03’45″N 131°54’00″E | 20,000 | Emergency standby | 100t chain + 5t sinker | Fl Y 10s | Japan Coast Guard |
| MB-4 | 33°04’15″N 131°51’30″E | 15,000 | Bunkering area | 80t chain + 4t sinker | Fl G 5s | Tsukumi Port Operations |
3. Terminals and Berths
Ore Terminal
| Terminal Name | Berth Name | Length (m) | Depth (m) | DWT Capacity | Max LoA (m) | Berth Type | Shore Cranes | Safe Working Load (SWL) | Main Cargo | Operational Restrictions |
|---|---|---|---|---|---|---|---|---|---|---|
| Ore Terminal | Ore Berth 1 | 250 | 15 | 80,000 | 230 | Dolphin-type | 2 (grab cranes) | 40 tons | Iron ore | Max wind 15m/s during ops |
| Ore Berth 2 | 200 | 12 | 50,000 | 190 | Quay wall | 1 (grab crane) | 25 tons | Iron ore/coal | Dust suppression required | |
| Ore Berth 3 | 180 | 10 | 30,000 | 170 | Quay wall | None | N/A | General bulk | Self-unloading vessels only |
Cement Terminal
| Terminal Name | Berth Name | Length (m) | Depth (m) | DWT Capacity | Max LoA (m) | Berth Type | Loading System | Capacity (t/hr) | Main Cargo | Operational Restrictions |
|---|---|---|---|---|---|---|---|---|---|---|
| Cement Terminal | Cement Berth | 180 | 10 | 30,000 | 170 | Quay wall | Pneumatic | 800 | Cement/clinker | Humidity control required |
| Annex Berth | 120 | 8 | 15,000 | 140 | Dolphin-type | Mechanical | 300 | Bagged cement | Daylight ops only |
General Cargo Terminal
| Terminal Name | Berth Name | Length (m) | Depth (m) | DWT Capacity | Max LoA (m) | Berth Type | Shore Cranes | SWL (tons) | Main Cargo | Special Features |
|---|---|---|---|---|---|---|---|---|---|---|
| General Cargo Terminal | East Berth | 150 | 8 | 20,000 | 140 | Quay wall | 2 (mobile) | 15 | Breakbulk | Ro-Ro ramp (50t capacity) |
| West Berth | 100 | 6 | 10,000 | 110 | Quay wall | 1 (mobile) | 10 | General cargo | Cold storage available |
4. Piers
| Pier Name | Length (m) | Depth (m) | Function | Construction | Fender Type | Access Restrictions |
|---|---|---|---|---|---|---|
| Fisheries Pier | 120 | 5 | Fishing vessels | Concrete | Rubber D-type | Max 30m LOA |
| Service Pier | 80 | 6 | Port service vessels | Steel sheet pile | Cell fenders | Bunkering available |
| Coast Guard Pier | 60 | 4 | Official vessels | Concrete | Rubber cone | Restricted access |
| Repair Pier | 50 | 4.5 | Vessel maintenance | Timber | Wooden fenders | Prior booking required |
5. Lighterages
| Area | Location | Max Draft (m) | Bottom Type | Primary Use | Current (knots) | Anchorage Holding |
|---|---|---|---|---|---|---|
| Inner harbor | 33°04’00″N 131°52’30″E | 4 | Mud | Barge operations | 1.5 | Good in SE winds |
| Eastern lighterage | 33°04’20″N 131°53’45″E | 3 | Sand | Coastal transshipment | 2.0 | Fair in NW winds |
| Western lighterage | 33°04’10″N 131°51’15″E | 3.5 | Clay | Container barges | 1.8 | Good in all winds |
6. Wharves
| Wharf Name | Length (m) | Depth (m) | Function | Construction | Deck Load (t/m²) | Utilities Available |
|---|---|---|---|---|---|---|
| Coastal Wharf | 300 | 7 | Coastal vessels | Concrete caisson | 10 | Water, power (440V) |
| Industrial Wharf | 200 | 5 | Local industry | Steel sheet pile | 5 | Power only (220V) |
| Fuel Wharf | 100 | 6 | Bunkering | Concrete | 15 | Fuel lines, fire system |
7. Operational Parameters
- Chart Datum: Japan Hydrographic Datum (JHD) – 0.3m below MSL
- Maximum permissible current: 2.5 knots at spring tide
- Tidal range: 1.8m (spring), 1.2m (neap)
- Pilotage: Compulsory for vessels >500 GT (24hr notice required)
- Tug assistance: Required for vessels >10,000 DWT (2 tugs minimum)
- Port operating hours: 24/7 (some berths have daylight restrictions)
- Emergency contact: VHF Ch 16/12 (Tsukumi Port Control)
- Port security level: ISPS Code compliant (Level 1 normal operations)
