1. Port Dolphins
| Dolphin Name | Location (WGS84) | Construction | Function | Specifications | Restrictions | Note |
|---|---|---|---|---|---|---|
| Yokosuka Naval Base Dolphins | 35°17’23″N 139°40’18″E | Reinforced concrete | Capital ship mooring | SWL 100t, 4-point mooring | Military zone | US Navy facility |
| Commercial Port Dolphins | 35°17’10″N 139°40’30″E | Steel pile | General cargo transfer | SWL 50t, 2 breasting dolphins | Daylight ops | Public access with permit |
| Fuel Transfer Dolphins | 35°17’05″N 139°40’42″E | Steel jacket | Bunkering operations | Double-walled piping, Class 1 Div 2 | Hot work prohibited | 24hr ops with approval |
| Repair Facility Dolphins | 35°17’15″N 139°40’22″E | Concrete caisson | Vessel maintenance | SWL 75t, fender system | Dry dock access | JSDF/US Navy use |
2. Mooring Buoys
| Buoy ID | Location | Type | Max Vessel Size | Mooring Configuration | Holding Power | Usage | Restrictions |
|---|---|---|---|---|---|---|---|
| MB-1 | 35°17’15″N 139°40’25″E | Single-point | 10,000 DWT | 4-leg chain, 50mm | 150t breakout | Commercial vessels | Max current 3 knots |
| MB-2 | 35°17’20″N 139°40’20″E | Multi-leg | 15,000 DWT | 6-leg chain, 60mm | 200t breakout | Naval auxiliaries | Military zone |
| MB-3 | 35°17’12″N 139°40’38″E | CALM buoy | 8,000 DWT | Single 80mm swivel | 100t breakout | Fuel transfer | Hazmat certified |
| MB-4 | 35°17’08″N 139°40’45″E | Multi-point | 5,000 DWT | 3-leg chain, 40mm | 75t breakout | Coastal vessels | Daylight only |
3. Piers and Berths
3.1 Yokosuka Naval Base Terminal
| Terminal | Berth | Length (m) | Depth (m) | DWT | Max LoA (m) | Type | Cranes | SWL (t) | Fender System | Cargo | Access |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Naval Base | Berth 1 | 300 | 12.5 | 50,000 | 280 | Capital ship | 2×50t | 50 | Cell fenders (D1.2) | Naval stores | Restricted |
| Naval Base | Berth 2 | 250 | 10.2 | 30,000 | 240 | Support | 1×30t | 30 | Cylindrical (D0.8) | Provisions | Restricted |
| Naval Base | Repair | 180 | 9.0 | 20,000 | 170 | Dry dock | None | N/A | Rubber block | Maintenance | Restricted |
| Naval Base | Submarine | 200 | 15.0 | N/A | 160 | Special | None | N/A | Special fendering | Submarine | Top Secret |
3.2 Yokosuka Commercial Terminal
| Terminal | Berth | Length (m) | Depth (m) | DWT | Max LoA (m) | Type | Cranes | SWL (t) | Fender System | Cargo | Access |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Commercial | North | 180 | 9.5 | 20,000 | 170 | General | 2×25t | 25 | Cell fenders (D0.8) | Containers | 24/7 |
| Commercial | South | 150 | 8.2 | 15,000 | 140 | Bulk | 1×20t | 20 | Cylindrical | Bulk cargo | Daylight |
| Commercial | East | 120 | 7.5 | 10,000 | 110 | Ro-Ro | None | N/A | Rubber block | Vehicles | Tidal |
| Commercial | West | 100 | 6.0 | 5,000 | 90 | Coastal | None | N/A | Timber | General | Public |
3.3 Yokosuka Fuel Terminal
| Terminal | Berth | Length (m) | Depth (m) | DWT | Max LoA (m) | Type | Piping | Transfer Rate | Cargo | Safety Zone |
|---|---|---|---|---|---|---|---|---|---|---|
| Fuel | Berth 1 | 200 | 11.0 | 25,000 | 190 | Liquid | 12″ diam | 500m³/hr | Fuel oil | 500m |
| Fuel | Berth 2 | 150 | 9.0 | 15,000 | 140 | Liquid | 8″ diam | 300m³/hr | Chemicals | 300m |
| Fuel | Berth 3 | 100 | 7.0 | 8,000 | 90 | LPG | Cryogenic | 200m³/hr | Liquefied gas | 800m |
4. Lighterage Areas
| Area | Location | Size | Equipment | Max Vessel | Transfer Rate | Usage | Restrictions |
|---|---|---|---|---|---|---|---|
| Inner Harbor | 35°17’05″N 139°40’35″E | 500×300m | 2×30t cranes | 5,000 DWT | 200t/day | General | Daylight |
| Anchorage A | 35°16’50″N 139°40’50″E | 800×500m | Barges | 8,000 DWT | 400t/day | Bulk | Pilot required |
| Emergency | 35°17’30″N 139°40’10″E | 300×200m | None | 3,000 DWT | N/A | Contingency | Govt use |
5. Wharves
| Wharf | Length (m) | Depth (m) | Structure | Equipment | Usage | Access |
|---|---|---|---|---|---|---|
| Fisheries | 120 | 5.0 | Concrete | Ice plant, cold store | Fishing | Public |
| Ferry | 80 | 6.0 | Steel pile | Passenger ramps | Ferries | Timetable |
| Coast Guard | 100 | 6.5 | Reinforced | Patrol docks | Official | Restricted |
| Pleasure Craft | 50 | 3.0 | Floating | Fuel dock | Recreational | Public |
6. Operational Parameters
- Tidal Range: 1.8m (MHWS 1.5m, MLWS -0.3m)
- Currents: Max 3.5 knots in main channel
- Pilotage: Mandatory >500 GT (Port Regs §12-4)
- Working Hours: Commercial 24/7, others as noted
- Emergency: Port Control VHF Ch 16/12
