ZHEN ZHU — Know Your Vessel

Updated: 2026-07-25 | Source: ship.rootz.global | Data: OFAC, EIA, EU MRV, GFW, AIS, USCG
Flag State
Barbados
Type
Crude Oil Tanker
Built
2005
21 years old
DWT
25,000

Present Location

Last seen at
SINGAPORE
SGP
Arrived
2025-09-24
Departed
2025-10-14
284d ago

Risk Assessment

Sanctions Status

ProgramDesignatedFlagTypeTonnage
IRAN-EO13902BarbadosCrude Oil Tanker-0-

Remarks: Vessel Year of Build 2005; Vessel Registration Identification IMO 9290359; MMSI 314100000; Linked To: ZHOUSHAN YAOHAI SHIPPING CO., LTD.

Carbon Intensity (CII)

Rating (2023)
Unrated
CO2 Emissions
3,368
tonnes/year
Distance
6,903
nm/year
YearRatingRatio
2023Unrated
2022Unrated
2021Unrated
2020Unrated
2019Unrated
2018Unrated

EU MRV 2024: 4,221 t CO2, 1,348 t fuel

Voyage Pattern

Port Visits
76
Avg Dwell
96h
4d per port
Port Utilization
34.4%
time in port
Dark Events
1
13h total

Primary route: DURBAN → PORT SAID → FUJAIRAH

Data period: 2023-05-15 to 2025-10-14

PortCountryVisits
DURBANZAF5
PORT SAIDEGY4
FUJAIRAHARE4
WALVIS BAYNAM3
SINGAPORESGP3

Recent port calls:

ArrivalDeparturePortCountryDuration
2025-09-242025-10-14SINGAPORESGP20.4d
2025-09-232025-09-24SINGAPORESGP0.7d
2025-09-202025-09-23TANJUNG PELEPASMYS2.9d
2025-09-172025-09-20SINGAPORESGP2.7d
2025-09-062025-09-06PORT LOUISMUS0.5d
2025-08-152025-08-16CAMPOS BASINBRA1.1d
2025-08-102025-08-14VITORIABRA4.7d
2025-08-082025-08-09CAMPOS BASINBRA1.4d
2025-08-052025-08-05CAMPOS BASINBRA0d
2025-08-032025-08-04TUBARAOBRA0.8d
2025-07-022025-07-18WALVIS BAYNAM16.2d
2025-06-062025-06-07DURBANZAF0.9d
2025-06-052025-06-06ZAF1.2d
2025-06-032025-06-05DURBANZAF1.7d
2025-05-282025-05-29WALVIS BAYNAM0.8d
2025-05-182025-05-22FORCADOS TERMINALNGA4d
2025-05-182025-05-18NGA0.2d
2025-05-162025-05-17LOMETGO0.9d
2025-05-042025-05-06ITA2d
2025-04-272025-05-04ITA6.7d

AIS Dark Periods

1 events, 13 hours total darkness

StartEndHoursAIS OffAIS OnDistanceImplied SpeedAnalysis
2025-08-162025-08-1613HIGH RISK ZONE

ESTIMATED — implied speed = straight-line distance / dark hours. Actual route unknown. Reference: loaded VLCC ~12-14 kn, ballast ~15-16 kn, stationary <1 kn = possible STS or anchorage.

Loitering Events

99 events, 1372 hours total (stationary at sea — possible STS transfers)

StartHoursPositionSpeedRisk Zone
2025-06-2312-27.4, 0.91.0 kn
2025-03-301525.3, 56.90.5 knHIGH RISK
2024-12-2061-6.9, 12.30.1 kn
2024-08-241-0.9, 4.41.2 knHIGH RISK
2024-08-2320-0.9, 4.21.0 knHIGH RISK
2024-08-2218-1.1, 4.01.1 knHIGH RISK
2024-08-2121-0.9, 3.90.6 knHIGH RISK
2024-08-2015-0.9, 4.00.9 knHIGH RISK
2024-08-205-0.8, 3.90.9 knHIGH RISK
2024-08-202-0.8, 3.91.2 knHIGH RISK

STS Encounter Detection

Other vessels detected loitering at the same position and time (within ~30nm, overlapping window)

2024-12-20 — -6.9, 12.3

VesselIMOStatusDurationSpeed
TROY9570008Clean47h0.1 kn

2024-06-28 — 5.3, 4.3

VesselIMOStatusDurationSpeed
ADVANTAGE START9466570Clean11h0.8 kn

2024-06-27 — 5.3, 4.3

VesselIMOStatusDurationSpeed
ADVANTAGE START9466570Clean11h0.8 kn

2023-11-05 — 5.2, 4.3

VesselIMOStatusDurationSpeed
ASPROUDA9478729Clean53h0.4 kn

2023-11-04 — 5.2, 4.4

VesselIMOStatusDurationSpeed
ASPROUDA9478729Clean53h0.4 kn

3 unique vessels encountered, 0 sanctioned

USCG Registration

StatusActive
Call SignTCDA2
Deficiency Count0
Detention Count0
Last Exam

Data sources: OFAC SDN, USCG CGMIX, EU MRV (EMSA), CII computed, Global Fishing Watch, GFW dark events. All records cryptographically attested on Polygon.

Data sources: U.S. Treasury (OFAC SDN), U.S. Energy Information Administration, European Maritime Safety Agency (EU MRV), U.S. Coast Guard (PSIX), Global Fishing Watch (GFW satellite AIS), AISStream.io. All data cryptographically attested on Polygon blockchain.

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