| Anchorage Name | Location (Coordinates) | Area (km²) | Depth (m) | Bottom Type | Max Vessel DWT | Capacity | Primary Use | Restrictions & Safety Notes | Commercial Notes |
|---|---|---|---|---|---|---|---|---|---|
| Sakaide No.1 Anchorage | 34°19’30″N, 133°51’00″E | 0.8 | 15-20 | Mud/Sand (JIS A 1204 classification) | 50,000 | 4 vessels (min 200m spacing) | General cargo, bulk carriers | – Limited swing room (1.5x LOA required) – Typhoon evacuation mandatory when Signal No.8 issued – AIS Class A transmission required – Anchor watch enforced (JCG Regulation 15-3) |
– Priority for Setouchi industrial zone vessels – Bunkering requires 24h prior notice to Port Control – Daytime cargo transfers permitted with tug standby |
| Sakaide No.2 Anchorage | 34°18’45″N, 133°50’15″E | 0.5 | 12-18 | Clay (N-value 8-12 by Japanese Geotechnical Standard) | 30,000 | 3 vessels (max LOA 180m) | Coastal vessels, tankers | – 200m exclusion from submarine cables (Chart JP-1245A) – Prohibited for vessels carrying Class 1 dangerous goods – Mandatory VHF Ch.16/12 monitoring – Currents exceed 2.5 knots during spring tides |
– Bunkering requires: • Oil spill containment boom • Port-approved contractor – Night operations need special clearance |
| Sakaide Emergency Anchorage | 34°20’10″N, 133°52’30″E | 0.3 | 10-15 | Gravel (20-50mm particle size) | 20,000 | 2 vessels | Emergency repairs/storms | – JCG notification within 1 hour (Maritime Safety Law Art.21) – No commercial operations – Maximum 72h stay without extension – Storm use requires yellow flag by day/red light by night |
– No cargo operations – Free of charge but requires Form MS-32 submission – Tug assistance mandatory for departure |
| Sakaide Temporary Holding Area | 34°17’55″N, 133°49’40″E | 0.4 | 8-12 | Sand/Shell (80% sand, 20% shell fragments) | 15,000 | 2 vessels | Pre-pilotage holding, short-term waits | – Daylight only (sunrise to sunset) – Max LOA 100m – Prohibited during tsunami warnings – Must maintain engine readiness |
– No commercial activity – Max 6h stay – Pilot pickup priority over other vessels |
EXPANDED CRITICAL INFORMATION
- Pilotage:
- Mandatory for vessels >10,000 GT or carrying dangerous goods
- Boarding position: 34°19’00″N, 133°50’30″E (marked by light buoy No.7)
- Advance notice: 48h for vessels >200m LOA (Port Ordinance 7-3)
- Navigation Hazards:
- Strong tidal streams (3.2 knots max at 34°18’N, 133°50’E)
- Vortex zones near Seto Ohashi Bridge piers (avoid within 0.5nm)
- Fishing nets prevalent NW of No.2 Anchorage (Oct-Mar)
- Prohibited Zones:
- 500m around Seto Ohashi Bridge (JCG Notice 12/2023)
- 300m around LNG terminal (34°18’20″N, 133°51’10″E)
- Military restricted area (34°21’00″N, 133°53’00″E)
- Environmental Compliance:
- Zero discharge within 3nm (Japan Marine Pollution Law Art.4)
- Ballast water: IMO D-2 standard required since 2024
- SOx Emission Control Area (SECA) rules apply
OPERATIONAL PROTOCOLS
- Emergency Contacts:
- Sakaide Port Control: VHF Ch.14 (24/7)
- Japan Coast Guard Takamatsu: VHF Ch.16/22
- Meteorological Limits:
- Anchorage evacuation when winds exceed 25m/s
- Wave height >2.5m prohibits bunkering
