| Anchorage Name | Location (Coordinates) | Area (km²) | Depth (m) | Bottom Type | Max Vessel DWT | Capacity | Primary Use | Holding Ground | Tidal Range (m) | Current (knots) | Restrictions & Safety Notes | Commercial Notes | Chart Reference | Last Survey | Special Conditions |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Marugame Main Anchorage A | 34°18’00″N 133°48’30″E | 1.2 | 15-18 | Clay with sand | 50,000 | 6 vessels | General cargo | Good (3.5:1 scope) | 2.8 | 1.5 max | Daylight operations only for vessels >200m LOA Minimum 3 shackles required Anchor watch mandatory |
Bunkering available with 24hr notice Fresh water supply Provisions delivery |
JHA Chart 1234 ENC JP411134 |
2023-05 (MLIT) Holding test: 85kPa |
Typhoon shelter available Dedicated tug standby zone |
| Marugame Fuel Anchorage B | 34°17’45″N 133°49’00″E | 0.8 | 12-15 | Sandy mud | 30,000 | 4 vessels | Bunkering | Excellent (4:1 scope) | 2.8 | 1.2 max | Class 1 Div 2 zone No hot work permitted Static electricity precautions Gas-free certificate required |
24hr advance notice required Double-hull barges only Approved suppliers list available |
JHA Chart 1234 ENC JP411134 |
2023-06 (ClassNK) Holding test: 92kPa |
Vapor recovery mandatory Continuous VOC monitoring |
| Marugame Waiting Anchorage C | 34°18’30″N 133°47’45″E | 1.5 | 10-12 | Mud | 20,000 | 8 vessels | Pre-berthing | Fair (3:1 scope) | 2.8 | 1.0 max | Minimum 500m spacing required Maximum stay 72 hours Wreck at 34°18’25″N 133°47’50″E |
Fresh water available Provisions delivery Crew changes |
JHA Chart 1235 ENC JP411135 |
2023-04 (MLIT) Holding test: 78kPa |
Dredging scheduled Q1 2024 Temporary reduction to 9m depth |
| Marugame Emergency Anchorage D | 34°17’15″N 133°47’15″E | 0.5 | 8-10 | Hard sand | 10,000 | 2 vessels | Emergency use | Poor (5:1 scope required) | 2.8 | 2.0 max | Use only with Port Control authorization Stand-by engine required Maximum 24hr stay |
No commercial services available Medical evacuation possible |
JHA Chart 1235 ENC JP411135 |
2023-03 (MLIT) Holding test: 65kPa |
Alternative anchorage available during NE monsoon |
| Marugame Fishery Anchorage E | 34°16’45″N 133°48’45″E | 0.6 | 5-7 | Muddy sand | 5,000 | 15 vessels | Fishing fleet | Good (3:1 scope) | 2.8 | 0.8 max | Priority for local fishing vessels No commercial vessels 1800-0600 Fishing nets present |
Ice supply available Fish transshipment Net repair services |
JHA Chart 1236 ENC JP411136 |
2023-07 (Fisheries Agency) Holding test: 80kPa |
Seasonal closure Jan-Feb for spawning |
| Marugame Deepwater Anchorage F | 34°18’15″N 133°49’30″E | 2.0 | 20-25 | Clay | 100,000 | 4 vessels | VLCC/Capesize | Excellent (4:1 scope) | 2.8 | 1.8 max | Tug standby required for vessels >250m LOA Dynamic positioning prohibited Mooring boats mandatory |
No bunkering permitted Pre-approved suppliers only Potable water available |
JHA Chart 1237 ENC JP411137 |
2023-08 (ClassNK) Holding test: 110kPa |
Military exercise area adjacent Monitor VHF Ch.16 |
| Marugame Quarantine Anchorage G | 34°17’30″N 133°49’45″E | 0.3 | 12-14 | Sandy clay | 15,000 | 2 vessels | Health inspection | Good (3.5:1 scope) | 2.8 | 1.0 max | Medical isolation protocol No crew transfers Radio silence maintained |
Medical supplies delivery Telemedicine available |
JHA Chart 1234 ENC JP411134 |
2023-09 (Quarantine) Holding test: 82kPa |
Designated WHO inspection zone |
Additional Anchorage Information
| Category | Specification |
|---|---|
| Anchorage Markings | Yellow buoys with radar reflectors (IALA Region A) Light characteristics: Fl.Y 5s RACON (T) on main anchorage buoys |
| Anchorage Prohibited Areas | 500m radius from submarine cables (marked on charts) 300m exclusion zone around gas pipeline Marine protected areas (no-anchor zones) |
| Anchor Watch Requirement | Mandatory for all vessels >5,000 DWT Continuous position monitoring required Dragging alarm set at 0.3nm radius |
| Dragging Anchor Protocol | Immediate notification to Port Control required Emergency tug available on 2hr notice Contingency plan activation procedure |
| Anchorage Fees | ¥15,000/day for vessels >10,000 DWT (Marugame Port Tariff No.3) ¥5,000/day for fishing vessels 50% surcharge for emergency use |
| Anchorage Holding Power | Tested annually by MLIT (2023 report available) Minimum holding capacity: 3x vessel weight Scope ratios verified for each bottom type |
| Emergency Contact | Marugame Port Control VHF Ch.16/12 (24/7 monitoring) MMSI: 004312345 Backup UHF Channel 8 |
| Anchorage Booking | Required 24hr in advance via JP-HarborNet system Confirmation number must be displayed Priority system for scheduled arrivals |
| Meteorological Limits | Maximum wind speed: 25m/s (Beaufort 10) 15m/s for vessels >50,000 DWT Wave height limit: 3m |
Safety Notes
- Maximum wind speed for safe anchoring: 25m/s (Beaufort 10)
15m/s for vessels >50,000 DWT
Special restrictions for high-windage vessels - Anchoring prohibited during typhoon warnings (Port Ordinance §12-3)
Mandatory evacuation when Signal No.8 issued
Designated typhoon moorings available - Daily anchorage status reports required via VHF 0800JST
Including anchor chain scope and tension
Electronic submission via JP-HarborNet accepted - Underwater obstructions exist in all anchorages – consult latest Notices to Mariners
Particularly in Anchorage C (wreck at 34°18’25″N 133°47’50″E)
Side-scan sonar survey available upon request - Anchor dragging alarm must be set at 0.3nm radius
Differential GPS recommended for large vessels
Port Control may require AIS anchoring mode - Emergency anchoring procedures require:
1. Immediate VHF notification
2. Black ball shape by day/all-round red light by night
3. Continuous engine readiness
Commercial Services Available at Anchor
- Bunkering (24hr notice required)
Only at Anchorage B with approved suppliers
Mass flow meters mandatory for fuel measurement - Fresh water supply (48hr notice for >100t)
Potable water certificate required
Disinfection protocol available - Provisions delivery (pre-approved vendors only)
Customs clearance available afloat
Cold chain logistics for perishables - Crew changes (with immigration clearance)
Require 72hr notice for >10 personnel
Designated launch landing points - Slop reception (Anchorage B only)
MARPOL compliance documentation required
Electronic waste tracking system - Garbage disposal (Anchorage A, C)
Port reception facilities available
Segregation according to MARPOL Annex V - Technical services:
Diver inspections
Emergency repairs
Underwater hull cleaning (approved contractors only)
Navigation Warnings
- Strong currents during spring tides (up to 2.5 knots)
Particularly in Anchorage D
Current tables available from Port Control - Fishing nets may be present near Anchorage E
Maintain strict lookout
Local fishing patterns vary seasonally - Military exercise areas adjacent to Anchorage F
Monitor VHF Ch.16 for warnings
Live firing notices issued via NAVTEX - Submarine activity possible in western approaches
Follow JCG instructions
Underwater listening watch recommended - Migratory whale routes cross northern anchorages
Seasonal speed restrictions may apply
Marine mammal observation required
Environmental Restrictions
- No anchoring in marine protected areas
500m exclusion zone around coral reefs
Ecologically sensitive zones marked on charts - Ballast water exchange prohibited within 12nm
Comply with Japan Ballast Water Regulations
Port sampling may be conducted - No discharge of any kind in Anchorage E
Strict enforcement by Fisheries Agency
Zero tolerance policy for oil sheens - Underwater noise restrictions:
No active sonar in anchorage areas
Limited engine testing periods - Anti-fouling paint regulations:
TBT-free coatings mandatory
Inspection may be required
Operational Procedures
- Anchoring sequence must be reported to Port Control:
1. Approach position
2. Anchoring commencement
3. Final position verification - Anchor chain inspection required every 6 hours:
Scope verification
Jerk load monitoring
Bottom fouling check - Emergency disconnect procedures:
Prepared for extreme weather events
Designated safe areas identified - Port State Control inspections:
May be conducted at anchor
Special focus on anchoring equipment
Certification Requirements
- Anchor and chain certificates:
Valid class certification required
Minimum safety factor of 4:1 - Windlass performance:
Test certificate valid within 12 months
Emergency power supply verified - Anchor position monitoring system:
Type-approved equipment required
Backup system mandatory for >20,000 DWT
