SEAWAYS YOSEMITE — Know Your Vessel

Updated: 2026-07-27 | Source: ship.rootz.global | Data: OFAC, EIA, EU MRV, GFW, AIS, USCG
Flag State
MARSHALL ISLANDS
Type
Oil tanker
Built
2009
17 years old
DWT
25,000

Present Location

Last seen at
PAN-42
PAN
Arrived
2026-06-15
Departed
2026-06-16
41d ago

Risk Assessment

Carbon Intensity (CII)

Rating (2023)
Unrated
CO2 Emissions
11,346
tonnes/year
Distance
20,391
nm/year
YearRatingRatio
2023Unrated
2022Unrated
2021Unrated
2020Unrated
2019Unrated
2018Unrated

EU MRV 2023: 11,346 t CO2, 3,604 t fuel, 556.44 kg CO2/nm

Voyage Pattern

Port Visits
82
Avg Dwell
115h
5d per port
Port Utilization
36.6%
time in port
Dark Events
1
17h total

Primary route: VANCOUVER → SAUSALITO → TELOK RAMUNIA

Data period: 2023-07-13 to 2026-06-16

PortCountryVisits
VANCOUVERCAN5
ZHOUSHANCHN4
TELOK RAMUNIAMYS4
SAUSALITOUSA4
HOUSTONUSA3

Recent port calls:

ArrivalDeparturePortCountryDuration
2026-06-152026-06-16PAN-42PAN1.6d
2026-05-182026-05-19YOKKAICHIJPN0.6d
2026-05-142026-05-16YOKOHAMAJPN1.6d
2026-04-092026-04-09PANAMA CANAL ANCHORAGEPAN0.3d
2026-04-082026-04-09MANZANILLOPAN0.8d
2026-04-012026-04-02HOUSTONUSA1.8d
2026-03-302026-03-31USA1.1d
2026-03-102026-03-13IRL2.4d
2026-02-192026-02-20HOUSTONUSA1.6d
2026-02-172026-02-18USA1.4d
2026-02-122026-02-14HOUSTONUSA2.2d
2026-02-102026-02-12USA1.3d
2026-02-052026-02-05GATUN LAKE ANCHORAGEPAN0.2d
2026-02-042026-02-05BALBOAPAN1.1d
2026-01-242026-01-25SELBYUSA1d
2026-01-162026-01-22USA6.3d
2026-01-092026-01-11VANCOUVERCAN2.5d
2026-01-072026-01-09VICTORIACAN1.4d
2025-12-112025-12-16KOR5.9d
2025-11-192025-11-25TELOK RAMUNIAMYS6.3d

AIS Dark Periods

1 events, 17 hours total darkness

StartEndHoursAIS OffAIS OnDistanceImplied SpeedAnalysis
2026-06-212026-06-2217HIGH 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

42 events, 1039 hours total (stationary at sea — possible STS transfers)

StartHoursPositionSpeedRisk Zone
2026-06-21236.6, -79.40.6 kn
2026-06-2156.5, -79.61.0 kn
2026-06-2066.5, -79.70.6 kn
2026-06-19306.6, -79.60.4 kn
2026-06-17576.4, -79.70.6 kn
2026-05-181133.8, 137.70.5 kn
2026-05-14734.8, 140.51.6 kn
2026-05-131434.7, 140.71.7 kn
2026-05-10234.9, 140.91.7 kn
2026-05-09734.8, 140.71.8 kn

STS Encounter Detection

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

2025-02-09 — East China Sea (Zhoushan)

VesselIMOStatusDurationSpeed
BOW SUMMER9215270Clean47h0.2 kn
POREWIT9302865Clean354h0.2 kn
DIAMOND EXPRESS9409493Clean19h0.3 kn
ARGENT HIBISCUS9414266Clean115h0.2 kn

2024-04-26 — East China Sea (Zhoushan)

VesselIMOStatusDurationSpeed
GOLSAN9165815SANCTIONED198h0.1 kn
TORM REPUBLICAN9290658Clean43h0.0 kn
IMPALAS9171448SANCTIONED68h0.1 kn
NEW PIONEER9486532Clean34h0.1 kn
PALANCA SHERIFF9492311Clean120h0.0 kn
EVER DAINTY9134232SANCTIONED21h0.1 kn

2024-02-19 — 37.4, -123.6

VesselIMOStatusDurationSpeed
MTM HOUSTON9505924Clean15h1.4 kn
ARDMORE CHEYENNE9707857Clean7h1.1 kn

2023-11-24 — 37.7, -123.9

VesselIMOStatusDurationSpeed
DUBAI GLAMOUR9402483Clean2h1.8 kn

2023-07-10 — 37.2, -1.1

VesselIMOStatusDurationSpeed
FRONT THOR9399480Clean32h1.0 kn

14 unique vessels encountered, 3 sanctioned

USCG Registration

StatusActive
Call SignV7QW2
Deficiency Count0
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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