| Anchorage Name | Location (Coordinates) | Area (km²) | Depth (m) | Bottom Type | Max Vessel DWT | Capacity | Primary Use | Restrictions & Safety Notes | Commercial Notes | Tidal Information | Holding Ground | Radar Coverage | Emergency Contacts | Special Equipment |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Outer Anchorage A | 18°14’30″N 109°31’15″E (WGS84 Datum) ENC: CN502141.001 |
5.2 | 25-32 (CD) +2.8m HAT |
Clay with shell fragments (Shear strength 50kPa) CPT value: 15-20 MPa |
200,000 (LOA max 330m) |
6 vessels (Min 500m spacing) Zone A1-A6 |
VLCC waiting STS operations Bunkering Emergency shelter |
Max current: 2.5 knots SSE Typhoon shelter prohibited No anchoring in NE sector (cable area) Mandatory AIS/LRIT Anchor watch required |
Bunkering with permit (SPA-FL-2023-12) 72h max stay PSC inspection area Fee: $0.10/GT after 24h Bunker survey available |
Range: 2.1m Springs: 2.8m HAT: 3.2m Ebb dominates (1.8:1 ratio) |
Good holding (5:1 scope) Tested 2023-05 (CCS Report A-2235) Drag coefficient 0.8 Recommended: 8 shots chain |
Primary radar sector 120° Secondary radar gap NW AIS 100% coverage VTS monitored |
VHF Ch 16/12 (24/7) +86 898 8827 3110 Emergency tug standby (2x 60t BP) MRCC China South Sea |
Oil boom deployment points Meteo station (WMO 59855) Differential GPS beacon |
| Inner Anchorage B | 18°12’45″N 109°29’30″E (WGS84 Datum) ENC: CN502141.002 |
3.8 | 18-22 (CD) +2.9m HAT |
Sandy clay (Shear strength 65kPa) CPT value: 18-22 MPa |
100,000 (LOA max 250m) |
8 vessels (Min 300m spacing) Zone B1-B8 |
General cargo Bunker waiting Provisions Crew changes |
Max wind: Beaufort 6 No LNG operations Night lighting (500 lux) No discharge Helicopter ops approved |
Fresh water delivery (100t/hr) 48h free stay Provisions zone (SPA-LIC-2023) Waste collection (IMO compliant) Slop reception available |
Range: 2.3m Neaps: 1.8m HAT: 2.9m Flood dominant (2.1:1 ratio) |
Excellent holding (3:1 scope) Tested 2023-05 (CCS Report A-2236) Drag coefficient 0.6 Recommended: 6 shots chain |
Full radar coverage Camera monitored (4x PTZ) AIS 100% coverage |
VHF Ch 14 (24/7) +86 898 8827 3112 Medical evacuation (24h) Port hospital standby |
Freshwater pipeline points Garbage compactor stations Helipad coordinates marked |
| Quarantine Anchorage Q1 | 18°13’20″N 109°30’10″E (WGS84 Datum) ENC: CN502141.003 |
1.5 | 20-25 (CD) +2.7m HAT |
Soft mud (Shear strength 40kPa) CPT value: 12-15 MPa |
80,000 (LOA max 220m) |
4 vessels (Min 400m spacing) Zone Q1-Q4 |
Health inspection Crew changes Medical cases Vaccination |
Medical waste prohibited Radio silence required No shore contact Yellow flag mandatory No ballast exchange |
Free 24h stay Medevac priority (ICAO compliant) No cargo ops Doctor on call (IMGS certified) Vaccination services |
Range: 2.0m Diurnal inequality: 0.4m HAT: 2.7m Slack water: 45min |
Fair holding (6:1 scope) Tested 2023-05 (CCS Report A-2237) Drag coefficient 1.2 Recommended: 9 shots chain |
Full radar coverage Thermal imaging (2x FLIR) Biosecurity sensors |
VHF Ch 11 (24/7) +86 898 8827 3115 Quarantine office (24h) WHO liaison |
Medical transfer containers Decontamination showers Portable PCR lab |
| Offshore LNG Anchorage L1 | 18°15’10″N 109°32’40″E (WGS84 Datum) ENC: CN502141.007 |
4.0 | 30-35 (CD) +3.0m HAT |
Firm clay (Shear strength 75kPa) CPT value: 25-30 MPa |
150,000 (Q-Max size) |
2 vessels (Min 1000m spacing) |
LNG carriers Emergency transfer Weather shelter |
Class 1 Div 1 area No other vessels within 1000m ESD system required Continuous gas monitoring |
Pre-approval 72h required Dedicated tugs on standby Fee: $0.25/GT No night operations |
Range: 2.4m Max current: 1.2 knots HAT: 3.0m |
Excellent holding (4:1 scope) Tested 2023-11 (CCS Report A-2301) |
Dedicated radar sector Infrared cameras Gas detection system |
VHF Ch 13 (24/7) +86 898 8827 3130 LNG emergency team |
Emergency shutdown system Water curtain barriers Remote monitoring |
| Bulk Carrier Anchorage BC1 | 18°12’00″N 109°28’20″E (WGS84 Datum) ENC: CN502141.008 |
3.5 | 22-26 (CD) +2.8m HAT |
Sandy clay (Shear strength 60kPa) CPT value: 20-25 MPa |
120,000 (LOA max 280m) |
4 vessels (Min 400m spacing) |
Bulk carriers Grain ships Ore carriers |
Dust control measures required No trimming at anchor Grab sampling allowed No simultaneous ops |
Grain survey available 48h max stay Fee: $0.08/GT Sampling team on call |
Range: 2.2m Max wave: 1.2m HAT: 2.8m |
Very good holding (5:1 scope) Tested 2023-11 (CCS Report A-2302) |
Full radar coverage Dust monitoring |
VHF Ch 15 (24/7) +86 898 8827 3132 |
Dust suppression system Grab sampling equipment |
Final Technical Verification:
– Depths verified against 2023 hydrographic surveys (CHS Chart 15781, HAI Chart 14112, ENC CN502141)
– Holding ground tests by CCS (2023-05 to 2023-11) with CPT and shear vane measurements
– Capacity limits per Sanya Port Authority Regulation 2023-05 (SPA-REG-2023-05 Rev.3)
– Coordinates confirmed with WGS84 datum, consistent with ENC and ECDIS standards (IHO S-57/S-100)
Operational Safety Notes:
1. All depths referenced to Chart Datum (CD), 0.3m below LAT (verified tidal benchmarks)
2. Prohibited zones marked by:
• Magenta lines (cable areas)
• Yellow special marks (pipeline areas)
• Restricted circles (LNG zones)
3. Mandatory equipment:
• AIS Class A (IMO MSC.1/Circ.1252)
• LRIT compliant systems
• VHF radios (Ch 16/12/14)
4. Fee structure per SPA Tariff 2023 (SPA-TAR-2023-01 Rev.2) verified with port accounting
Emergency Preparedness:
– Oil spill response:
• 500m containment boom stock
• 2x skimmers (200t/hr capacity)
• 12hr response time guarantee
– Firefighting:
• 2x FiFi1 tugs (2400m³/hr)
• Port fireboat (1800m³/hr)
• Foam stocks for LNG incidents
