BLUE BUTTERFLY — Know Your Vessel

Updated: 2026-08-02 | Source: ship.rootz.global | Data: OFAC, EIA, EU MRV, GFW, AIS, USCG
Flag State
PANAMA
Type
Oil tanker
Built
2019
7 years old
DWT
25,000

Present Location

Last seen at
AMSTERDAM
NLD
Arrived
2025-12-19
Departed
2025-12-21
225d ago

Risk Assessment

Carbon Intensity (CII)

Rating (2021)
Unrated
CO2 Emissions
5,610
tonnes/year
Distance
20,803
nm/year
YearRatingRatio
2021Unrated
2020Unrated

EU MRV 2021: 5,610 t CO2, 1,791 t fuel, 269.67 kg CO2/nm

Voyage Pattern

Port Visits
99
Avg Dwell
64h
3d per port
Port Utilization
30.3%
time in port
Dark Events
1
24h total

Primary route: ANTWERP → HONGKONG → MAGNETIC ISLAND

Data period: 2023-08-01 to 2025-12-21

PortCountryVisits
ANTWERPBEL6
MAGNETIC ISLANDAUS4
HONGKONGCHN4
ROTTERDAM MAASVLAKTENLD3
ULSANKOR2

Recent port calls:

ArrivalDeparturePortCountryDuration
2025-12-192025-12-21AMSTERDAMNLD1.7d
2025-12-172025-12-19ANTWERPBEL1.9d
2025-12-142025-12-17ANTWERPBEL2.8d
2025-12-102025-12-13SAINT HELENSGBR3.7d
2025-12-012025-12-03VENTSPILSLVA1.8d
2025-11-292025-12-01KLAIPEDALTU1.6d
2025-11-252025-11-27GOTEBORGSWE1.5d
2025-11-202025-11-23IJMUIDENNLD2.9d
2025-11-182025-11-20ANTWERPBEL1.5d
2025-11-172025-11-18ANTWERPBEL0.5d
2025-11-162025-11-17LE HAVREFRA1.1d
2025-11-152025-11-16FRA0.4d
2025-10-282025-10-30USA1.9d
2025-10-262025-10-28USA2d
2025-10-232025-10-25USA2.3d
2025-10-062025-10-08BRA-269BRA2d
2025-09-302025-10-06ARATUBRA6.6d
2025-09-182025-09-18GIBRALTARGIB0.5d
2025-09-142025-09-17CARTAGENAESP2.8d
2025-09-092025-09-12MARSAXLOKKMLT2.1d

AIS Dark Periods

1 events, 24 hours total darkness

StartEndHoursAIS OffAIS OnDistanceImplied SpeedAnalysis
2024-03-112024-03-1224HIGH 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, 395 hours total (stationary at sea — possible STS transfers)

StartHoursPositionSpeedRisk Zone
2026-07-03624.8, -88.41.7 kn
2026-06-26126.7, -92.41.9 kn
2026-06-16139.9, -72.41.9 kn
2026-03-06238.1, -9.40.9 kn
2026-02-14635.7, -4.11.4 kn
2026-02-14335.6, -4.00.8 kn
2026-02-13635.8, -4.11.5 kn
2026-01-21443.9, -2.91.5 kn
2026-01-21143.9, -2.91.7 kn
2026-01-09143.7, -4.51.9 kn

STS Encounter Detection

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

2025-03-09 — 31.2, 122.5

VesselIMOStatusDurationSpeed
NESHAT9167277SANCTIONED77h0.0 kn
DILOS9711535Clean9h0.0 kn

2025-02-03 — 35.2, 129.7

VesselIMOStatusDurationSpeed
GRAN COUVA9380520Clean12h1.3 kn
TORM PHILIPPINES9440136Clean9h1.3 kn

2025-02-02 — 35.2, 129.7

VesselIMOStatusDurationSpeed
TORM PHILIPPINES9440136Clean3h1.5 kn

2025-01-30 — East China Sea (Zhoushan)

VesselIMOStatusDurationSpeed
CRATIS9702041Clean87h0.2 kn

2025-01-28 — East China Sea (Zhoushan)

VesselIMOStatusDurationSpeed
KISO9379894Clean4h1.1 kn

2024-10-11 — 34.1, 128.0

VesselIMOStatusDurationSpeed
HAFNIA EXCEED9735608Clean173h0.1 kn

2024-10-10 — 33.8, 127.9

VesselIMOStatusDurationSpeed
HAFNIA EXCEED9735608Clean173h0.1 kn

2023-12-10 — -34.5, 151.3

VesselIMOStatusDurationSpeed
ASPHALT SPIRIT9612557Clean5h1.7 kn

2023-12-10 — -34.2, 151.6

VesselIMOStatusDurationSpeed
ASPHALT SPIRIT9612557Clean4h1.6 kn

2023-08-06 — 34.1, 128.4

VesselIMOStatusDurationSpeed
AFRA WILLOW9251822SANCTIONED4h0.8 kn
TOWER BRIDGE9292034SANCTIONED64h0.7 kn

10 unique vessels encountered, 3 sanctioned

USCG Registration

StatusActive
Call Sign3FJA5
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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