SEAWAYS DIAMOND HEAD — Know Your Vessel

Updated: 2026-09-10 | Source: ship.rootz.global | Data: OFAC, EIA, EU MRV, GFW, AIS, USCG
Flag State
MARSHALL ISLANDS
Type
Oil tanker
Built
2016
10 years old
DWT
25,000

Present Location

Last seen at
INGLESIDE
USA
Arrived
2026-05-27
Departed
2026-05-30
104d ago

Risk Assessment

Carbon Intensity (CII)

Rating (2022)
Unrated
CO2 Emissions
6,700
tonnes/year
Distance
12,224
nm/year

EU MRV 2024: 10,821 t CO2, 3,467 t fuel

Voyage Pattern

Port Visits
59
Avg Dwell
74h
3d per port
Port Utilization
17.8%
time in port
Dark Events
3
409h total

Primary route: TELOK RAMUNIA → RAS TANURA → DONGJIAKOU

Data period: 2023-08-11 to 2026-05-30

PortCountryVisits
TELOK RAMUNIAMYS9
RAS TANURASAU5
NINGBOCHN3
DONGJIAKOUCHN3
PORTO DO ACUBRA2

Recent port calls:

ArrivalDeparturePortCountryDuration
2026-05-272026-05-30INGLESIDEUSA2.9d
2026-05-192026-05-27USA8.1d
2026-05-082026-05-10CANAPORTCAN2.3d
2026-04-282026-04-28MINDELOCPV0.2d
2026-03-202026-03-24TELOK RAMUNIAMYS3.6d
2026-03-112026-03-13DONGJIAKOUCHN1.1d
2026-03-102026-03-10DONGJIAKOUCHN0.3d
2026-03-042026-03-06JINZHOUCHN2d
2026-03-022026-03-04JINZHOUCHN2d
2026-02-252026-02-27NINGBOCHN2.2d
2026-02-022026-02-06OMN3.5d
2026-01-222026-01-24TELOK RAMUNIAMYS1.6d
2026-01-142026-01-17TWN2.1d
2025-12-202025-12-21RAS TANURASAU1.8d
2025-12-192025-12-19RAS TANURASAU0.5d
2025-12-182025-12-19RAS TANURASAU0.6d
2025-12-032025-12-07TELOK RAMUNIAMYS4.1d
2025-11-252025-11-28HUIZHOUCHN3d
2025-11-192025-11-21NINGBOCHN1.2d
2025-11-102025-11-11SINGAPORESGP0.9d

AIS Dark Periods

3 events, 409 hours total darkness

StartEndHoursAIS OffAIS OnDistanceImplied SpeedAnalysis
2026-04-212026-04-2333HIGH RISK ZONE
2025-07-042025-07-16290HIGH RISK ZONE
2024-07-142024-07-1885HIGH 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

59 events, 920 hours total (stationary at sea — possible STS transfers)

StartHoursPositionSpeedRisk Zone
2026-07-20419.8, 119.81.0 kn
2026-06-011328.0, -96.30.2 kn
2026-05-302527.7, -96.50.3 kn
2026-05-30227.7, -96.30.5 kn
2026-05-12137.1, -71.00.1 kn
2026-04-21133.1, 6.71.0 knHIGH RISK
2026-04-19363.1, 6.70.1 knHIGH RISK
2026-04-1943.1, 6.71.1 knHIGH RISK
2026-04-1933.1, 6.70.8 knHIGH RISK
2026-04-1873.2, 6.70.8 knHIGH RISK

STS Encounter Detection

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

2026-06-01 — 28.0, -96.3

VesselIMOStatusDurationSpeed
STI ALEXIS9696694Clean42h0.1 kn

2026-05-30 — 27.7, -96.5

VesselIMOStatusDurationSpeed
EAGLE HELSINKI9453963Clean23h0.2 kn
STI ALEXIS9696694Clean42h0.1 kn

2026-05-30 — 27.7, -96.3

VesselIMOStatusDurationSpeed
KOKKARI9337157Clean2h0.7 kn
EAGLE HELSINKI9453963Clean2h0.8 kn

2026-04-18 — 3.2, 6.7

VesselIMOStatusDurationSpeed
ASHOKA9346952Clean84h0.3 kn

2026-04-18 — 3.1, 6.7

VesselIMOStatusDurationSpeed
ASHOKA9346952Clean84h0.3 kn

2026-04-18 — 3.2, 6.6

VesselIMOStatusDurationSpeed
ASHOKA9346952Clean84h0.3 kn

2026-04-17 — 3.2, 6.7

VesselIMOStatusDurationSpeed
ASHOKA9346952Clean84h0.3 kn

2026-03-10 — 35.4, 120.2

VesselIMOStatusDurationSpeed
KAROLOS9410208Clean283h0.1 kn
ALBERTA9486922Clean217h0.1 kn

2026-03-08 — 35.2, 120.5

VesselIMOStatusDurationSpeed
DELMAR9199127SANCTIONED41h0.0 kn
KEEGAN9286138SANCTIONED9h0.1 kn
ALBERTA9486922Clean217h0.1 kn
AMARTHEA9752395Clean361h0.0 kn

2026-02-24 — East China Sea (Zhoushan)

VesselIMOStatusDurationSpeed
KUNASHIR9142588SANCTIONED181h0.1 kn
SEAWAYS TYBEE9734642Clean75h0.1 kn
ADAMANTIOS9905447Clean21h0.1 kn

2025-12-19 — 27.1, 50.3

VesselIMOStatusDurationSpeed
NISYROS9412062Clean121h0.3 kn

2025-12-19 — 27.1, 50.2

VesselIMOStatusDurationSpeed
COSMERRY LAKE9325037Clean17h0.8 kn
NISYROS9412062Clean121h0.3 kn

2025-12-18 — 27.1, 50.2

VesselIMOStatusDurationSpeed
COSMERRY LAKE9325037Clean17h0.8 kn
NISYROS9412062Clean121h0.3 kn

2025-04-24 — 6.1, -79.7

VesselIMOStatusDurationSpeed
DUBAI ANGEL9422524Clean9h1.8 kn
SEA GALAXY9935648Clean30h1.1 kn

2025-04-20 — 6.5, -79.5

VesselIMOStatusDurationSpeed
SEA GALAXY9935648Clean41h0.9 kn

2025-03-19 — 32.2, -119.0

VesselIMOStatusDurationSpeed
PACIFIC CORAL9893113Clean9h1.4 kn

2025-03-15 — 31.8, -119.0

VesselIMOStatusDurationSpeed
ATLANTIC GOLD9889136Clean4h1.7 kn

2025-03-14 — 32.3, -119.4

VesselIMOStatusDurationSpeed
TRINITY9730361Clean5h1.7 kn

2025-03-13 — 32.4, -119.4

VesselIMOStatusDurationSpeed
NICOPOLIS9798868Clean15h1.2 kn
NICOPOLIS9798868Clean1h1.9 kn
COSWISH LAKE9804277Clean3h1.7 kn

2024-07-22 — Persian Gulf (Kharg Island)

VesselIMOStatusDurationSpeed
DIVIT9194139SANCTIONED2616h0.1 kn
GLOBAL ELEGANCE9232955SANCTIONED9144h0.0 kn
ADENA9254862SANCTIONED434h0.1 kn
BALTIC HORIZON9263382SANCTIONED421h0.0 kn
ACHILLEAS9398072Clean63h0.1 kn
SEAWAYS HENDRICKS9727015Clean40h0.1 kn
RELIABLE WARRIOR9753557Clean89h0.1 kn
SEAGALAXY9847231Clean402h0.1 kn

2024-06-20 — East China Sea (Zhoushan)

VesselIMOStatusDurationSpeed
BERTHA9292163SANCTIONED190h0.1 kn
IRIS9529968Clean11h0.3 kn

2024-03-03 — Persian Gulf (Kharg Island)

VesselIMOStatusDurationSpeed
ULLSWATER9139945SANCTIONED140h0.0 kn
SEATURBO9204764SANCTIONED118h0.1 kn
HEMERA9263954SANCTIONED483h0.1 kn
JAG LOK9293507Clean63h0.2 kn
MELTEMI9298741Clean13h0.4 kn
NEW JOVIALITY9486491Clean55h0.1 kn
JAG LEENA9516105Clean57h0.1 kn

38 unique vessels encountered, 11 sanctioned

Port State Control

No inspection data held. This is not a clean record — we currently hold no PSC inspections for any vessel. Do not read the absence of detentions here as evidence of none.

Check Paris MOU and USCG PSIX directly for this vessel.

Cargo Manifests

No manifest data held. Our upstream manifest source now blocks automated access, so this dataset is empty for every vessel — absence here says nothing about this ship's cargo history.

USCG Registration

StatusActive
Call SignV7NH4
Deficiency Count1
Detention Count0
Last Exam

Data sources: 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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