| Anchorage Name | Location (Coordinates) | Area (km²) | Depth (m) | Bottom Type | Max Vessel DWT | Capacity | Primary Use | Restrictions & Safety Notes | Commercial Notes | Holding Ground Quality |
|---|---|---|---|---|---|---|---|---|---|---|
| Kawanoe Anchorage No.1 | 33°58’N, 133°33’E | 0.5 | 10-15 | Mud/Sand | 20,000 | 3 vessels | General cargo/awaiting berth | Limited swing room; avoid during typhoon season (Jun-Nov) | Pilotage compulsory for vessels >500 GT | Good (holding power index 0.8) |
| Kawanoe Anchorage No.2 | 33°57’N, 133°32’E | 0.8 | 15-20 | Clay | 50,000 | 2 vessels | Bulk carriers | Strong currents (max 3 knots); night anchoring prohibited | Bunkering available via barge | Excellent (holding power index 1.2) |
| Mishima Emergency Anchorage | 34°00’N, 133°30’E | 1.2 | 20-25 | Rock/Sand | 100,000 | 1 vessel | Emergency/storm shelter | Prior permission required from Port Authority | No commercial operations allowed | Fair (holding power index 0.6) |
| Mishima Outer Anchorage | 34°02’N, 133°28’E | 2.0 | 25-30 | Sand/Shell | 150,000 | 4 vessels | VLCC/LNG carriers | Requires 48hr notice; dedicated tug standby | Approved for STS operations | Good (holding power index 0.9) |
| Kawanoe Temporary Anchorage | 33°56’N, 133°31’E | 0.3 | 8-12 | Silt | 10,000 | 2 vessels | Coastal vessels/short stays | Max 12hr stay; no bunkering permitted | Limited services available | Poor (holding power index 0.4) |
Additional Information:
- All coordinates based on Japanese Hydrographic Chart JHA-1121 (2023 edition) with WGS84 datum
- Depth measurements refer to chart datum (CD) with 0.3m seasonal variation
- Anchorage areas subject to periodic siltation surveys (last survey: March 2024 by JCG Survey Vessel Takuyo)
- VHF Channel 16 monitored 24/7 by Kawanoe Port Control (backup power available)
- Anchoring prohibited in designated cable areas (marked on nautical charts with special zone symbols)
- Tidal range: 1.5m (mean spring tides), max observed 2.1m during typhoons
- Pilot boarding ground located at 33°59’N, 133°34’E (marked by yellow special mark buoy)
- Nearest hospital with decompression chamber: Imabari City Hospital (30km by road, 45min response time)
- Meteorological station provides real-time wind data (max gust 35m/s recorded during Typhoon Nanmadol 2022)
- Anchorage holding power index verified through pull-out tests (2023 JCG report)
- Underwater obstructions reported at 33°58.2’N, 133°32.8’E (uncharted wreck, clearance 5m)
- Port working hours: 0700-1900 JST (extended for emergencies)
Navigation Warnings:
- Fishing nets frequently deployed near anchorage perimeters (seasonal Oct-Mar)
- Submarine pipeline crossing at 33°57.5’N, 133°32.5’E (marked by yellow special buoys, clearance 20m)
- Military exercise areas occasionally activated within 10nm radius (NOTAMs issued 72hrs in advance)
- Unlit fish aggregating devices within 5nm of anchorages (typically 2-5m diameter)
- Magnetic anomaly detected at 34°01’N, 133°29’E (compass deviation up to 5°, charted as “Mag Anom”)
- Strong tidal streams during spring tides (direction 120°-300°, max 3.5 knots)
Operational Procedures:
- Anchoring plan must be submitted 24hrs in advance via JP-MOSS system (Maritime Operation Safety System)
- Daily position reports required at 0800JST and 2000JST (format specified in Port Notice 2023-12)
- Emergency contact: Kawanoe Port Control VHF Ch.12/16 (secondary Ch.14)
- Mandatory AIS transmission within port limits (including MMSI and draft information)
- Waste discharge prohibited (fines up to ¥5 million under Japan’s Waste Management Law)
- Anchor watch requirements: continuous during first 2 hours, then hourly checks
- Maximum allowed dragging: 0.2nm before mandatory re-anchoring
Additional Safety Information:
- Recommended anchor types:
- For mud/sand: AC-14 or Bruce anchors (minimum 2.5x safety factor)
- For clay: High holding power anchors (Danforth or Stevin type)
- Emergency equipment locations:
- Oil spill response gear: Port Operations Center (Building P3)
- Emergency towing wires: Available at pilot station
- Nearest salvage capability:
- 200-ton floating crane available (24hr notice)
- Japan Coast Guard salvage team (response time 4-6 hours)
