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STELLA THERESA — Know Your Vessel

Updated: 2026-07-27 | Source: ship.rootz.global | Data: OFAC, EIA, EU MRV, GFW, AIS, USCG
Flag State
Majuro
Type
Chemical tanker
DWT
25,000

Present Location

Last seen at
SAINT HELENS
GBR
Arrived
2025-05-28
Departed
2025-05-31
422d ago

Risk Assessment

Carbon Intensity (CII)

Rating (2023)
Unrated
CO2 Emissions
4,881
tonnes/year
Distance
31,877
nm/year
YearRatingRatio
2023Unrated—
2022Unrated—
2021Unrated—
2020Unrated—
2019Unrated—

EU MRV 2024: 6,415 t CO2, 2,044 t fuel

Voyage Pattern

Port Visits
99
Avg Dwell
58h
2d per port
Port Utilization
35.3%
time in port
Dark Events
15
1032h total

Primary route: LAS PALMAS → ROTTERDAM MAASVLAKTE → LAGOS

Data period: 2023-07-29 to 2025-05-31

PortCountryVisits
LAS PALMASESP13
ROTTERDAM MAASVLAKTENLD9
LAGOSNGA9
SAINT HELENSGBR6
ALGECIRASESP5

Recent port calls:

ArrivalDeparturePortCountryDuration
2025-05-282025-05-31SAINT HELENSGBR3.1d
2025-05-262025-05-27ROTTERDAM MAASVLAKTENLD1.2d
2025-05-252025-05-26—NLD0.5d
2025-05-232025-05-25ANTWERPBEL1.6d
2025-05-212025-05-23ANTWERPBEL1.8d
2025-05-182025-05-21IJMUIDENNLD2.8d
2025-05-172025-05-18AMSTERDAMNLD0.9d
2025-05-022025-05-07DAKARSEN4.8d
2025-04-192025-04-26LAGOSNGA6.9d
2025-04-092025-04-09LAS PALMASESP0.7d
2025-04-052025-04-06GIBRALTARGIB1d
2025-03-242025-03-30SAINT HELENSGBR5.8d
2025-03-232025-03-24ROTTERDAM MAASVLAKTENLD1d
2025-03-222025-03-23—NLD0.8d
2025-03-202025-03-22ANTWERPBEL1.6d
2025-03-192025-03-20ANTWERPBEL0.6d
2025-03-112025-03-12LAS PALMASESP0.4d
2025-02-262025-02-28—GAB2.6d
2025-02-212025-02-23LAGOSNGA2.8d
2025-02-162025-02-17SOYOAGO1.1d

AIS Dark Periods

15 events, 1032 hours total darkness

StartEndHoursAIS OffAIS OnDistanceImplied SpeedAnalysis
2026-02-042026-02-0514————HIGH RISK ZONE
2025-12-012025-12-0226————HIGH RISK ZONE
2025-11-282025-11-2924————HIGH RISK ZONE
2025-11-172025-11-22124————HIGH RISK ZONE
2025-04-262025-04-2719————HIGH RISK ZONE
2024-12-152024-12-1616————HIGH RISK ZONE
2024-12-092024-12-1034————HIGH RISK ZONE
2024-09-122024-09-1558————HIGH RISK ZONE
2024-09-042024-09-0637————HIGH RISK ZONE
2024-08-142024-08-25262————HIGH 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

85 events, 818 hours total (stationary at sea — possible STS transfers)

StartHoursPositionSpeedRisk Zone
2026-06-241634.9, -8.00.8 kn—
2026-06-181240.8, 1.60.5 kn—
2026-03-25127.6, -14.11.2 kn—
2026-03-0113.5, 5.60.9 knHIGH RISK
2026-03-0123.6, 5.60.9 knHIGH RISK
2026-03-0143.6, 5.61.1 knHIGH RISK
2026-02-2863.6, 5.61.1 knHIGH RISK
2026-02-2843.6, 5.61.2 knHIGH RISK
2026-02-2873.6, 5.51.1 knHIGH RISK
2026-02-2743.6, 5.51.2 knHIGH RISK

STS Encounter Detection

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

2025-07-27 — 36.1, -4.7

VesselIMOStatusDurationSpeed
ROSS SEA9457593Clean20h1.1 kn
ROSS SEA9457593Clean20h1.1 kn

2024-11-17 — 35.8, -7.1

VesselIMOStatusDurationSpeed
HELLAS FIGHTER9722625Clean17h1.2 kn

2024-08-07 — 36.2, -4.7

VesselIMOStatusDurationSpeed
M/T MED BLUE JAY9544346Clean24h1.1 kn

2024-02-20 — 35.7, -4.6

VesselIMOStatusDurationSpeed
VELOS FORTUNA9347310Clean2h1.7 kn
ARDMORE ENCOUNTER9654579Clean18h0.4 kn
ARDMORE ENCOUNTER9654579Clean7h0.2 kn
SEA ALTUS9724570Clean46h1.3 kn

2024-01-07 — 36.7, -6.9

VesselIMOStatusDurationSpeed
SEACOD9352315Clean17h0.8 kn

2023-08-08 — 49.8, -0.6

VesselIMOStatusDurationSpeed
ACHILLEAS9458494Clean125h0.1 kn

2023-08-07 — 49.8, -0.5

VesselIMOStatusDurationSpeed
ACHILLEAS9458494Clean125h0.1 kn

2023-08-07 — 49.8, -0.6

VesselIMOStatusDurationSpeed
ACHILLEAS9458494Clean125h0.1 kn

8 unique vessels encountered, 0 sanctioned

Data sources: 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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