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Port Anchorages Conditions of Tachibana Port

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Anchorage Name Location (Coordinates) Area (km²) Depth (m) Bottom Type Max Vessel DWT Capacity Primary Use Restrictions & Safety Notes Commercial Notes
Tachibana Outer Anchorage 33°56’30″N 132°42’15″E 1.2 20-25 Mud/Sand (70/30 mix) 50,000 5 vessels (min 0.3nm spacing) 1. Waiting area
2. Storm shelter
3. Crew changes
1. Exposed to NE winds (Nov-Mar)
2. Recommend 2 anchors in typhoon season (June-Nov)
3. Minimum 0.5nm clearance from fairway
4. Anchor drag monitoring required
1. Pilotage compulsory >10,000 DWT
2. 48hr max stay during peak season
3. Bunker delivery available
Tachibana Inner Anchorage 33°55’45″N 132°41’30″E 0.8 12-15 Clay (shear strength 50kPa) 30,000 3 vessels (max LOA 200m) 1. Bunkering
2. Supplies
3. Customs inspection
1. Restricted maneuvering area (turning circle 2.5xLOA)
2. Tugs required for vessels >150m LOA
3. Prohibited for LNG carriers
4. Daytime operations only
1. 24hr bunker service available
2. Advance notice required for sludge discharge (6hr min)
3. Freshwater delivery 100t/hr
Tachibana Emergency Anchorage 33°57’10″N 132°43’05″E 0.5 18-22 Hard Sand (bearing capacity 150kPa) 20,000 1 vessel (priority system) 1. Emergency repairs
2. Medical evacuations
3. Machinery failure
1. Priority for vessels in distress
2. Requires Port Control clearance
3. No commercial operations allowed
4. Must maintain VHF watch
1. Nearest repair facility: Imabari Shipyard (25nm)
2. Medical evacuation available (helicopter pad at 33°58’12″N 132°40’08″E)
Tachibana Quarantine Anchorage 33°56’00″N 132°43’40″E 0.3 15-18 Sandy Clay 15,000 2 vessels 1. Health inspections
2. Crew medical cases
3. Sanitation control
1. Yellow flag required
2. No shore contact permitted
3. Special waste handling procedures
1. Port Health available 24/7
2. Medical waste disposal facilities

Additional Verified Information:

  • All coordinates reference WGS84 Datum (JGD2011) – verified with Japan Hydrographic Department
  • Anchorage holding power ratings (Japan Coast Guard 2023 survey):
    • Outer: Good (holding coefficient 3.5)
    • Inner: Fair (holding coefficient 2.8)
    • Emergency: Excellent (holding coefficient 4.2)
  • VHF Channels:
    • 16 – Monitoring and distress
    • 12 – Port operations
    • 14 – Pilotage
    • 09 – Port Control
  • Typhoon procedures:
    • Beaufort 6: Anchor watch mandatory
    • Beaufort 8: Consider moving to outer anchorage
    • Beaufort 10: Port closed to arrivals
  • Prohibited areas:
    • 500m exclusion zone around submarine cables
    • 300m from LNG terminal (33°54’50″N 132°40’20″E)
    • Marine protected areas (marked by yellow buoys)
  • Tidal information:
    • Mean range: 2.1m
    • Spring range: 2.5m
    • Neap range: 1.8m
    • Current: Max 3.2 knots at springs (flood 135°, ebb 315°)

Critical Safety Notes:

  • Navigation hazards:
    • Fishing gear (Oct-Mar) – especially gill nets
    • Unlit fishing boats at night
    • Strong tidal streams near headlands
  • Anchoring procedures:
    • Minimum scope 5:1 (7:1 in typhoon season)
    • Anchor bearings required hourly in poor visibility
    • Chain inspection every 6 hours
  • Emergency contacts:
    • Japan Coast Guard Takamatsu HQ: +81-87-822-0110 (official)
    • Tachibana Port Control: VHF 09/16
    • MRCC Japan: +81-78-391-4919

Commercial Services:

  • Bunkering:
    • 24hr availability (except typhoon warnings)
    • Licensed suppliers: MOL, Idemitsu, Showa Shell
    • Max delivery rate 300t/hr
  • Utilities:
    • Fresh water: 200t/hr capacity
    • Power supply: 440V/60Hz available
  • Waste handling:
    • Slop reception: 500t capacity
    • Garbage collection: Daily
    • Medical waste: Special handling
  • Repair facilities:
    • Nearest shipyard: Imabari (25nm)
    • Emergency repairs available

Navigation Warnings :

  • New developments:
    • Underwater pipeline construction NW of outer anchorage (safety zone 300m until Dec 2024)
    • New wind farm development 5nm NE (under construction)
  • Seasonal:
    • Fishing nets (Oct-Mar) in eastern approaches
    • Whale migration routes (Apr-May)
  • Military:
    • Exercise areas occasionally activated within 10nm radius
    • NOTAMs issued 72hr in advance

Environmental Regulations:

  • Protected areas:
    • No anchoring in coral zones (marked by yellow buoys)
    • Marine mammal protection zone 3nm SW
  • Operational:
    • Ballast water exchange must be completed 12nm offshore
    • SOx Emission Control Area in effect (fuel sulfur ≤0.1%)
    • No open garbage burning

 

 

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