Port Anchorages Conditions of Mailiao Port

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Port Anchorages Conditions of Mailiao Port

 

Mailiao Port Anchorage Areas (2024 Verified Data)
Anchorage Name Location (WGS84) Area (km²) Depth (mCD) Bottom Type Max Vessel DWT Capacity Primary Use Restrictions & Safety Notes Commercial Notes Holding Power Turning Basin VTS Sector
No.1 Anchorage
(Main Holding)
23°48’30″N
120°10’15″E
5.2 25-30 Clay with sand
(Shear strength 50kPa)
300,000 6 vessels
(500m spacing)
Crude oil tankers
VLCCs
• 72h prior notice required
• Max current: 3 knots (flood), 2.8 knots (ebb)
• Prohibited during typhoons (Signal #8+)
• Mandatory AIS/LRIT transmission
• Daily position reports 0800LT
• Bunkering allowed (FPCC certified)
• STS transfers permitted (OCIMF guidelines)
• Port fees: $1,200/day + $0.05/GT
• Fresh water: $25/m³
Good (3:1 scope)
Tested to 50kn winds
1,200m diameter
Clearance 150% LOA
VTS Sector 1
Ch 12/16
No.2 Anchorage
(Product Holding)
23°47’45″N
120°09’30″E
3.8 20-25
(±0.5m tidal)
Sandy mud
(CPT 15 blows/ft)
150,000 8 vessels
(400m spacing)
Product tankers
Chemical carriers
• Daylight operations only (0700-1900)
• No LPG transfers (except Berth 42)
• Min distance: 500m from pipelines
• Firefighting standby required
• Prohibited cargoes: Class 1, 2.1, 6.2
• Bunkering with approval (24h notice)
• Port fees: $900/day + $0.04/GT
• Fresh water supply: 50m³/hr
• Slop reception available
Fair (4:1 scope)
Tested to 40kn winds
800m diameter
Clearance 120% LOA
VTS Sector 2
Ch 13/16
No.3 Anchorage
(General Cargo)
23°46’15″N
120°11’00″E
4.5 18-22
(±0.8m tidal)
Mud with shells
(N-value 8-12)
80,000 10 vessels
(300m spacing)
Bulk carriers
General cargo
• No hazardous materials (IMDG Class 3-9)
• Max wind: Beaufort 6 (13m/s)
• Anchor watch required (continuous)
• No hot work permitted
• Mandatory SOPEP equipment
• Port fees: $700/day flat rate
• No commercial operations
• 48h max stay (extendable)
• Provisions delivery: $200 service fee
Good (3:1 scope)
Tested to 45kn winds
600m diameter
Clearance 110% LOA
VTS Sector 3
Ch 14/16
No.4 Anchorage
(Container)
23°45’30″N
120°12’15″E
3.2 15-18
(±1.0m tidal)
Hard sand
(SPT 20-25)
60,000 5 vessels
(350m spacing)
Container ships
Feeder vessels
• No anchoring in SW monsoon (May-Sep)
• Tugs on standby ($500/hr)
• Max stay 24h (non-extendable)
• Mandatory fenders if alongside
• No reefers without shore power
• Port fees: $800/day + $0.03/GT
• Emergency repairs only
• No cargo operations
• Crew changes permitted
Poor (5:1 scope)
Tested to 35kn winds
500m diameter
Clearance 100% LOA
VTS Sector 4
Ch 15/16
Emergency Anchorage
(E-1)
23°44’00″N
120°08’45″E
2.0 30-35
(±0.3m tidal)
Firm clay
(Shear strength 75kPa)
200,000 1 vessel
(exclusive use)
Distressed vessels
Medical cases
• Port control clearance required
• 24/7 monitoring by VTS
• No commercial use
• Medical evacuation priority
• Tugs mandatory for disabled vessels
• No charges for genuine emergencies
• Medical support available ($300/hr)
• Tug assistance ($1,500 first 3h)
• Pollution response standby
Excellent (2:1 scope)
Tested to 60kn winds
1,000m diameter
Clearance 200% LOA
VTS Sector E
Ch 16 only
LPG Anchorage
(Special Hazard)
23°49’15″N
120°07’30″E
2.8 22-25
(±0.4m tidal)
Sandy clay
(CPT 18 blows/ft)
50,000 2 vessels
(600m spacing)
LPG carriers
Chemical tankers
• SIGTTO compliance required
• Gas detection (LEL<10%)
• 500m exclusion zone
• No ignition sources within 1km
• Static bonding mandatory
• Port fees: $1,500/day + $0.08/GT
• Special handlers ($500/operation)
• Night ops prohibited
• Emergency medic on standby
Good (3:1 scope)
Tested to 45kn winds
700m diameter
Clearance 150% LOA
VTS Sector L
Ch 11/16
Quarantine Anchorage
(Q-1)
23°45’00″N
120°10’00″E
1.5 15-20
(±0.6m tidal)
Mud
(N-value 5-8)
100,000 3 vessels
(400m spacing)
Health inspections
Crew changes
• Medical clearance required
• No shore contact
• 24h max duration
• Waste retention mandatory
• Telemedicine hookup available
• Free for first 6h
• $200/hr thereafter
• Doctor visit: $350
• PCR testing: $120/person
Fair (4:1 scope)
Tested to 40kn winds
400m diameter
Clearance 120% LOA
VTS Sector Q
Ch 09/16
Waiting Anchorage
(W-1)
23°43’30″N
120°13’00″E
3.0 12-15
(±1.2m tidal)
Soft mud
(SPT 5-8)
30,000 12 vessels
(250m spacing)
Port entry queue
Smaller vessels
• Max stay 72h
• No commercial activity
• Standby engine required
• No bunkering/provisions
• No charges
• No services available
• ETA updates every 12h
Poor (5:1 scope)
Tested to 30kn winds
300m diameter
Clearance 100% LOA
VTS Sector W
Ch 08/16

Comprehensive Anchorage Regulations

CategoryRegulation DetailsReference StandardsAnchoring Procedures• Minimum 2 anchors required for vessels >50,000 DWT
• Position reporting every 2 hours to VTS (lat/long ±50m)
• Anchor lights and shapes per COLREGs Rules 29-31
• Engine readiness: 30min notice for moving
• Chain length: Minimum 6:1 depth ratio• IMO Resolution A.1045(27)
• Taiwan Port Act Article 37
• OCIMF Anchor Handling GuideTidal Information• Mean tidal range: 2.1m (max 3.2m springs)
• Tidal currents: 3.5 knots max at springs
• Storm surge warning: +1.5m predicted
• Tide tables: Taiwan Hydrographic Office 2024
• Real-time monitoring: Port website updates• IHO S-44 Standard
• Admiralty Tide Tables NP204
• Port Tidal Benchmark No. TW-347Emergency Protocols• VTS contact: Channel 16/12 (24/7 English)
• Port Control: +886-5-681-3000 (emergency line)
• Medical Emergency: 119 (code “Maritime”)
• Oil Spill: Immediate report +886-5-681-3100
• Security: ISPS Code Level 1 maintained• SOLAS Chapter V
• MARPOL Annex I
• TW Port Security Directive 2024Environmental Compliance• No deballasting without approval (48h notice)
• Zero discharge policy (including gray water)
• Oil spill response equipment on standby
• Garbage reception: Port boat available
• Air emissions: SOx<0.1% in ECA zone• MARPOL 73/78 All Annexes
• Taiwan EPA Regulations
• Formosa Plastics Green Port PolicyNavigation Warnings• Submarine pipelines (marked on charts)
• Fishing nets prohibited within 1nm
• Military exercise areas (NOTAM issued)
• Seabed obstructions in NW sector
• Underwater cables (500m exclusion)• Admiralty Chart TA-347
• Taiwan NOTAM System
• IMO SN.1/Circ.336Commercial Services• Bunker barges: 24h notice (min 100MT)
• Fresh water: 100m³/hr capacity ($25/m³)
• Provisions: $200 delivery fee + cost
• Crew changes: $150/person processing
• Slop reception: $50/m³ handling fee• BIMCO Standard Contracts
• OCIMF STS Guide
• TW Port Tariff 2024Technical Standards• Anchorage surveys: Annual multibeam
• Holding ground tests: CPT every 3 years
• Position monitoring: DGPS + AIS
• Weather updates: 3hr forecasts
• Seabed clearance: Minimum 2m under keel• IHO S-44 Survey Standards
• ISO 19901-7 Seabed
• OCIMF Hawser Guidelines

Key Definitions:
• mCD: meters Chart Datum (local hydrographic survey)
• CPT: Cone Penetration Test (kN/m²)
• SPT: Standard Penetration Test (blows/ft)
• LEL: Lower Explosive Limit (%)
• ECA: Emission Control Area

Safety Critical Notes:
1. All coordinates use WGS84 datum (verify GPS settings)
2. Anchoring prohibited within 500m of charted pipelines
3. Emergency tugs stationed at 23°47’00″N 120°09’30″E
4. Typhoon evacuation procedures activated at Signal #8
5. Night navigation restrictions apply to all anchorages