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Port Anchorages Conditions of Dandong Port

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Port Anchorages Conditions of Dandong 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 Special Requirements
Dandong No.1 Anchorage 39°52’30″N 124°08’15″E
(WGS84 Datum)		 3.2 ±0.1 12-15 (CD)
Max 17.2m at HW springs
Min 11.4m at LW springs		 Clay/Silt (Good holding)
Shear strength 50-75kPa
CPT resistance 2-3 MPa		 50,000
(LOA ≤250m)		 6 vessels max
(min 500m separation)
Total GT limit: 300,000
  • General cargo
  • Bulk carriers
  • RO-RO vessels
  • Container ships (non-hazardous)
  • Prohibited during NE monsoon > Beaufort 7 (Nov-Mar)
  • Min 0.5nm clearance between vessel groups
  • Anchoring prohibited in marked pipeline area (NW sector 310°-350°)
  • Daily drag checks required (minimum 3 positions/day)
  • No vessels carrying Class 2.1/3/4.3 materials
  • Free anchorage ≤72hrs (inclusive)
  • Pilot mandatory for all movements
  • USD 800/day after 72hrs (+10% VAT)
  • Fresh water delivery available (48hr notice)
  • Vessels >20,000GT must deploy both anchors (minimum 7 shackles)
  • Night illumination required (minimum 2 deck lights)
  • ECDIS mandatory for vessels >10,000GT
  • Monthly anchor chain inspections required for long-stay vessels
Dandong No.2 (Dangerous Cargo) 39°50’45″N 124°06’20″E
(WGS84 Datum)		 1.8 ±0.05 14-16 (CD)
Max 18.1m at HW springs
Min 13.2m at LW springs		 Sandy clay (Moderate holding)
Shear strength 40-60kPa
CPT resistance 1.5-2.5 MPa		 30,000
(LOA ≤200m)		 3 vessels max
(min 800m separation)
Total GT limit: 90,000
  • Class A/B petroleum products
  • Chemicals IMO Class 2-6
  • Bulk liquid hazardous materials
  • IMO Class 1 explosives prohibited
  • 24hr AIS monitoring required (transmission interval ≤2min)
  • 500m exclusion zone when occupied (marked by buoys)
  • No bunkering operations allowed
  • Strict no-smoking zone within 1nm
  • Emergency response vessel on standby during operations
  • USD 1,200/day (+13% hazardous cargo surcharge)
  • Pre-approval from MSA required (minimum 72hr notice)
  • 48hr notice for hazardous ops (including tank cleaning)
  • Mandatory pre-entry inspection for vessels >15 years old
  • Stand-by tug required for vessels >10,000GT (minimum 60t bollard pull)
  • Gas detection systems mandatory (calibrated within 30 days)
  • Double hull requirement for oil tankers
  • Emergency towing wires rigged at all times
Dandong Emergency Anchorage 39°54’10″N 124°10’05″E
(WGS84 Datum)		 0.9 ±0.02 18-20 (CD)
Max 22.4m at HW springs
Min 16.8m at LW springs		 Firm sand (Excellent holding)
Shear strength 80-100kPa
CPT resistance 4-5 MPa		 100,000
(LOA ≤300m)		 1 vessel only
(no overlapping)
  • Disabled vessels (engine failure/steering casualty)
  • Storm refuge (typhoon conditions)
  • Medical emergencies requiring quarantine
  • Collision/grounding casualties
  • Activated by VTS only (authorization code required)
  • Stand-by tug required (minimum 80t bollard pull)
  • Priority for vessels >20,000GT
  • Max 7-day occupancy (extendable by MSA approval)
  • Continuous VHF watch on Ch 16/12/08
  • Daily condition reports to Port Authority
  • No charge for genuine emergencies
  • Commercial use strictly prohibited
  • Salvage bonds may apply (minimum USD 500,000 guarantee)
  • Environmental damage liability unlimited
  • Emergency equipment inspection prior to use (MSA checklist)
  • VHF Ch 16 continuous watch + backup satellite communication
  • Emergency power source required (minimum 18hr capacity)
  • Daily position verification by DGPS
Yalu River Inner Anchorage 39°48’15″N 124°11’40″E
(WGS84 Datum)		 1.2 ±0.03 8-10 (CD)
Max 12.3m at HW springs
Min 6.5m at LW springs		 Mud (Variable holding)
Shear strength 30-50kPa
CPT resistance 1-1.8 MPa		 10,000
(LOA ≤150m)		 4 vessels max
(min 300m separation)
Total GT limit: 40,000
  • Coastal vessels
  • Waiting berths
  • Barges
  • Feeder container ships
  • Max stay 48hrs (extensions require fee)
  • No night movements (sunset to sunrise)
  • Currents may reach 3.5 knots (flood tide)
  • No vessels >150m LOA
  • No ballast exchange within river limits
  • Strict speed limit (≤5 knots in approach channel)
  • USD 400/day (+5% river usage fee)
  • Fresh water available (24hr notice)
  • Provisions delivery allowed (customs clearance required)
  • Waste disposal services available
  • Local pilot required for entry/exit (Category B license)
  • Daily tide tables verification (Port Authority bulletin)
  • Mooring boats required for vessels >80m LOA
  • Fenders mandatory for all vessels
Dandong LNG Temporary Holding Area 39°56’05″N 124°04’30″E
(WGS84 Datum)		 2.5 ±0.08 22-25 (CD)
Dredged to 27m +1m tolerance
Max 29.1m at HW springs		 Gravel/Clay (Excellent holding)
Shear strength 90-110kPa
CPT resistance 5-6 MPa		 250,000
(LOA ≤330m)		 2 vessels max
(1km separation)
Total GT limit: 500,000
  • LNG carriers
  • FSRU operations
  • LPG carriers (special approval)
  • Class 1 Div 2 zone within 500m
  • No other vessels within 1nm during operations
  • Continuous radar surveillance (minimum 25rpm)
  • Emergency shutdown systems required (dual redundant)
  • No helicopter operations within 2nm
  • Static electricity discharge before mooring
  • USD 5,000/day (+15% energy surcharge)
  • 72hr pre-booking required (Q88 form submission)
  • Escort tugs on standby (minimum 2×80t bollard pull)
  • Pre-cooling analysis report required
  • IG systems must be operational (Oâ‚‚ <5%)
  • Emergency towing gear ready (fore and aft)
  • CRP propulsion required for dynamic positioning
  • Minimum 4 mooring lines (125% MBL)
  • Gas detection every 30 minutes (full perimeter)
Dandong Quarantine Anchorage 39°53’20″N 124°09’10″E
(WGS84 Datum)		 1.5 ±0.05 15-18 (CD)
Max 20.2m at HW springs
Min 14.1m at LW springs		 Clay/Sand mix (Good holding)
Shear strength 60-80kPa
CPT resistance 3-4 MPa		 70,000
(LOA ≤230m)		 3 vessels max
(min 600m separation)
Total GT limit: 210,000
  • Vessels with medical emergencies
  • Suspected infectious disease cases
  • Food/water contamination incidents
  • Customs inspection hold
  • Activated by Customs/Quarantine only
  • No crew transfers during quarantine
  • Medical waste containment required
  • VHF Ch 14 dedicated monitoring
  • No provisions loading during hold
  • USD 2,000/day quarantine fee
  • Medical services available (48hr notice)
  • Testing lab on-site (WHO certified)
  • Decontamination services available
  • Negative pressure cabins for suspected cases
  • Wastewater retention systems required
  • Daily health reports to authorities
  • Security patrol boats monitoring 24/7

Comprehensive Anchorage Regulations:

  • Holding Ground Standards:
    • Tested to IHO S-44 Edition 6.1.0 (2023 survey)
    • Annual CPT verification (Cone Penetration Test)
    • Minimum safety factor 1.5 for design conditions
  • Position Keeping Requirements:
    • Vessels >5,000GT must maintain 24hr bridge watch (STCW A-VIII/2)
    • GPS position verification every 30 minutes (DGPS preferred)
    • Anchor watch circles plotted on ECDIS (minimum 2.5x scope radius)
    • Automatic position transmitters for vessels >20,000GT
  • Communication Protocols:
    • Mandatory VHF Ch 16/12 monitoring (SOLAS V/12)
    • Hourly position reports to VTS (format: IMO Standard A.851(20))
    • Emergency contact numbers displayed on bridge (MSA Regulation 2021-15)
    • Satellite backup communication required for vessels >50,000GT
  • Draught Limitations:
    • Actual depth = Chart Datum + Tide – 10% safety margin
    • Max allowable draught: 90% of charted depth
    • Under-keel clearance minimum 1.5m or 10% draught (whichever greater)
    • Tidal predictions from China MHWS No. 1401
  • Anchoring Procedures:
    • Minimum 5x depth chain scope required (7x for typhoon alerts)
    • Anchor watch circles plotted on ECDIS (alarm set at 150% radius)
    • Dedicated anchor watch officer for vessels >30,000GT
    • Anchor dragging alarms (minimum 0.1nm threshold)
  • Emergency Preparedness:
    • All vessels must have emergency towing gear ready (fore and aft)
    • Oil spill containment equipment for tankers (OPA 90 standards)
    • Emergency power source (minimum 18hr operation)
    • Quarterly anchor drills required for vessels >10,000GT
  • Environmental Compliance:
    • No anchoring in marine protected areas (Chart ENC502141-Overlay)
    • Ballast water exchange regulations (IMO D-1 standard minimum)
    • Zero discharge policy within 12nm of coastline
    • Monthly oil record book inspections

Updated Tidal Reference (2024 Edition):

Tide Station Chart Datum (CD) Mean High Water Springs (MHWS) Mean Low Water Springs (MLWS) Highest Astronomical Tide (HAT) Lowest Astronomical Tide (LAT) Mean Range Spring Range Neap Range Tidal Stream (Max Flood/Ebb)
Dandong Main Port (No.1 Tide Gauge) 2.1m below MSL 4.8m 0.6m 5.2m (April) 0.3m (January) 3.8m 4.2m 3.1m 2.8kn/3.1kn (Yalu River mouth)
Yalu River Inner Station 1.8m below MSL 5.1m 0.9m 5.5m 0.5m 4.0m 4.3m 3.3m 3.5kn/3.8kn (Spring tide)

Tidal Notes:

  • Reference: China Maritime Safety Administration Tide Tables Vol.1401 (2024)
  • Time Correction: High water +1h25m to Dalian standard port
  • Meteorological Effects: NE winds >7 Beaufort may suppress tides by 0.3-0.5m
  • Datum Alignment: All depths on ENC CN500181 referenced to CD
  • Storm Surge Risk: Maximum recorded surge +2.1m (Typhoon Muifa 2022)

Meteorological Limits (Updated):

Anchorage Max Wind Speed Wave Height Limit Current Speed Limit Visibility Minimum Typhoon Condition Ice Conditions
No.1 Anchorage 25kn sustained (Beaufort 6) 2.0m significant 3.0kn 1nm (day), 2nm (night) Evacuate when Signal No.8 hoisted No anchoring when ice >30cm thick
No.2 Anchorage 20kn sustained (Beaufort 5) 1.5m significant 2.5kn 1.5nm (day/night) Evacuate when Signal No.7 hoisted Prohibited below 0°C sea temp
Emergency Anchorage 40kn sustained (Beaufort 8) 3.5m significant 4.0kn 0.5nm (emergency only) Special authorization required Icebreaker support mandatory

Navigation Warnings:

  • Fishing Zones: Avoid areas within 2nm of 39°55’N 124°12’E (Apr-Oct)
  • Military Exercise Areas: Temporary closures issued via NAVAREA XI warnings
  • Submarine Cables: No anchoring within 500m of cable routes (Chart Note 147A)
  • Dredging Operations: Active in Yalu River approach channel (2024 Phase III)

Emergency Procedures:

Scenario Immediate Action Contact Backup Measure Reporting Format
Anchor Dragging Deploy second anchor + engine astern VTS Ch 12 (Code RED-1) Request tug assistance IMO MSC.1/Circ.1598
Collision Risk Sound 5 short blasts + illuminate vessel VTS Ch 16 + DSC alert Activate AIS emergency tag COLREG Rule 34(d)
Oil Spill Activate SOPEP + contain with first response MSA Hotline Deploy spill boom if available IMO OPRC-HNS Protocol

Regulatory Compliance Checklist:

  1. Pre-Arrival:
    • Submit ETA 72/48/24hr in advance (IMO FAL Form 1)
    • Verify chart corrections up to NM Week 24/2024
    • Confirm anchor certification (Class survey within 5 years)
  2. Anchoring:
    • Plot position on both ECDIS and paper chart (SOLAS V/19)
    • Verify holding ground via echo sounder bottom trace
    • Calculate swing circle with 7:1 scope safety margin
  3. During Stay:
    • Maintain continuous AIS transmission (IMO A.1106(29))
    • Record hourly position in deck logbook
    • Conduct daily anchor chain inspections
  4. Departure:
    • Confirm anchor clear of seabed via CCTV/diver if needed
    • Report anchor status to VTS before movement
    • Submit anchorage condition report via MSA Form AP-7

Contact Information:

Service VHF Channel Telephone Working Hours Emergency Contact
Dandong VTS Ch 12/16 +86-415-3123456 24/7 DSC Group Call: 004123100
Port Authority Ch 14 +86-415-3188888 0800-2000 LT After hours: VTS relay
Pilot Station Ch 08 +86-415-3166666 0600-2200 LT Night pilot: 2hr notice
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