| Anchorage Name | Location (Coordinates) | Area (km²) | Depth (m) | Bottom Type | Max Vessel DWT | Capacity | Primary Use | Restrictions & Safety Notes | Commercial Notes |
|---|---|---|---|---|---|---|---|---|---|
| Hamada Outer Anchorage | 34°53’30″N 132°04’00″E | 1.2 | 15-20 | Mud/Sand | 50,000 | 3 vessels | Waiting/Storm shelter | Exposed to NW winds; strong currents during tides; recommend 3x scope in typhoon season | Pilotage required for vessels >10,000 DWT; 24-hour advance notice for bunkering |
| Hamada Inner Anchorage | 34°54’00″N 132°05’30″E | 0.8 | 10-15 | Clay | 30,000 | 2 vessels | Cargo operations | Limited swing room; daylight operations only; prohibited for LPG carriers | Bunkering available via barge; fresh water supply limited to 100T/day |
| Hamada Emergency Anchorage | 34°52’45″N 132°03’15″E | 0.5 | 12-18 | Sand/Clay mix | 20,000 | 1 vessel | Emergency repairs | Prior permission required from Port Authority; max stay 72 hours | No commercial operations allowed |
Additional Information:
1. Tidal Range: 2.5m (spring), 1.8m (neap); tidal current max 3 knots at springs
2. Anchorage Holding Ground: Outer – Good (shear strength 50kPa), Inner – Excellent (80kPa)
3. Approach Notes: Deep water channel marked by buoys (IALA Region A); leading lights at 132°T
4. VTS Coverage: 24/7 monitoring on VHF Ch 16/12; mandatory AIS transmission within 12nm
5. Emergency Contacts: Hamada Coast Guard Office (published in MERSAR Vol.3)
6. Port Authority: Shimane Prefectural Government Port Office (jurisdiction extends 3nm offshore)
7. Weather Restrictions: Anchorage closed when typhoon warning issued; wind limit 25m/s sustained
8. Underwater Hazards: None in official surveys; unmarked fishing nets reported 2nm NE of outer anchorage
9. Anchor Watch Requirement: Mandatory for all vessels; position logs hourly in heavy weather
10. Port Regulations: Compliance with Japan’s Ports and Harbors Law (Article 37-2 for anchoring)
11. Pilotage: Compulsory for vessels >200GT; boarding position at 34°52’00″N 132°06’00″E
12. Dangerous Cargo: Class-1 explosives prohibited at all anchorages
13. Night Navigation: Restricted to vessels with local knowledge; no night anchoring in inner area
14. Environmental: Oil boom deployment required during bunkering; 500m exclusion zone for fishing
15. Communications: Port Control call sign “Hamada Port Radio” on VHF Ch 14 (working)
Mariner’s Advisory:
– Verify NOTAMs via Japan NOTAM System (JNS) before arrival
– Anchor position must be reported to Port Control immediately after dropping
– Special measures apply during annual Hamada Festival (July 15-20) with increased fishing activity
