TWIN STAR (IMO 9101637) has 3 potential, low-confidence sanctions matches — name-only, with no IMO/MMSI confirmation in the source records — as of 2026-07-12. This is an unconfirmed flag, not a designation; confirm against the primary list(s) (OpenSanctions, UK HMT/OFSI, OFAC SDN) before treating as sanctioned. Check the current status for IMO 9101637 at https://arcnautical.com/check/9101637.
TWIN STAR is a Panama-flagged vessel with 3 active sanctions designations (OpenSanctions + UK HMT/OFSI + OFAC SDN) · ownership opacity 70/100.
Key verifiable facts
Sanctions listingListed on OpenSanctions, program ua_war_sanctionsSource: OpenSanctions · as of 2026-07-12
Flag-state PSC performancePanama flag — Paris MoU Grey List (4.2% 3-yr detention); Tokyo MoU Grey List (3.8%)Source: Paris MoU WGB 2021–2023 + Tokyo MoU 2023 lists · reconciled as of 2026-05-30
Sanctions screeningScreened against OFAC SDN, EU Consolidated, UN Security Council, UK HMT/OFSI, and OpenSanctions vessel lists — 1 potential name match — IMO not confirmed in source; manual verification required.Source: ArcNautical sanctions screening · as of 2026-07-12
TWIN STAR matched 3 sanctions records. 1 of these match on exact IMO or MMSI — the highest-confidence form of sanctions identification.
Source list
Programs
Match type
Confidence
OpenSanctions
ua_war_sanctions
Exact IMO
100%
UK HMT/OFSI
De-flag, Prohibition of port entry
Name fuzzy
93%
OFAC SDN
IRAN-EO13902
Name fuzzy
89%
Corporate Ownership & Opacity
70/100Elevated opacity
Registered entity
Not in GLEIF registry
LEI registration is voluntary for non-financial maritime entities; absence is itself a signal.
+35No GLEIF/LEI record (LEI registration voluntary for non-financial maritime entities)
+25Flag jurisdiction PA — Tier 3 — Opaque
+10No public beneficial-ownership record on a flag-of-convenience register
Recent Port Calls (AIS)
No AIS port-call data captured for TWIN STAR in the last 180 days. Sanctioned vessels frequently transmit AIS irregularly or disable transponders entirely — this absence is itself a vetting signal documented in the OFAC, EU, and IMO sanctions evasion advisories.
Flag State Risk Analysis: Panama
Grey ListPA
TWIN STAR flies the Panama flag, which records a Paris MoU 3-year detention rate of 4.2% (Grey List) and a Tokyo MoU rate of 3.8% (Grey List). Worst-list placement: Grey List.
Live Sanctions Screening
Sanctions
AMBER
1 potential name match — IMO not confirmed in source; manual verification required.
Ownership Opacity
70
HIGH OPACITY
0 = transparent · 100 = opaque
Vetting Grade
C
Score: 46/100
marginal
Weekly snapshot · as of 2026-07-12
As of 2026-07-12
Request the reviewed intelligence dossier
Ownership chain details, sanctions match evidence, PSC detention records, and PDF report after manual review for TWIN STAR.
Frequently Asked Questions
Is TWIN STAR (IMO 9101637) sanctioned?
TWIN STAR has potential name-only matches in sanctions-related databases (Ukraine War Sanctions) — not IMO/MMSI-confirmed, not a designation; manual verification required. Use the live screening tool above for the most current status.
What is IMO number 9101637?
IMO 9101637 is the International Maritime Organization identification number permanently assigned to TWIN STAR. IMO numbers are unique 7-digit identifiers that remain with a vessel throughout its lifetime, regardless of changes in name, flag, or ownership. They are the primary identifier used in sanctions screening, port state control, and maritime compliance.
How is the vessel vetting grade calculated?
ArcNautical's vetting grade (A through E) is a composite score based on five weighted factors: PSC detention history (30%), flag state performance (25%), ownership transparency (20%), vessel age (15%), and inspection recency (10%). Data is sourced from Paris MOU, Tokyo MOU, GLEIF corporate registry, and OFAC/EU/UN sanctions databases.