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saltytar01/ofac-sdn-vessel-ownership-resolution

Canonical page: https://arcnautical.com/data/ofac-sdn-vessel-ownership-resolution/Permanent record (DOI): https://doi.org/10.5281/zenodo.22808695Publisher: ArcNautical. Public-source compilation (OFAC SDN + GLEIF), CC BY 4.0. This Hugging Face copy mirrors the canonical page; the Zenodo DOI is the citable identifier. OFAC SDN vessel records (screened subset), snapshot 2026-09-16: flag and public GLEIF ownership-resolution stage Public-record dataset of 1,527 screened… See the full description on the dataset page: https://huggingface.co/datasets/saltytar01/ofac-sdn-vessel-ownership-resolution.

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Canonical page: https://arcnautical.com/data/ofac-sdn-vessel-ownership-resolution/ Permanent record (DOI): https://doi.org/10.5281/zenodo.22808695 Publisher: ArcNautical. Public-source compilation (OFAC SDN + GLEIF), CC BY 4.0. This Hugging Face copy mirrors the canonical page; the Zenodo DOI is the citable identifier.

OFAC SDN vessel records (screened subset), snapshot 2026-09-16: flag and public GLEIF ownership-resolution stage

Public-record dataset of 1,527 screened IMO-bearing vessel records that appeared on the OFAC SDN list as of 2026-09-16 (of 1,527 IMO-bearing OFAC vessel records in that snapshot), each with flag, flag-transparency tier, sanctions program, and public GLEIF ownership-resolution stage. GLEIF screening as of 2026-09-16.

License: CC BY 4.0. Cite as shown under "How to cite" below (the Zenodo DOI is the permanent identifier). Canonical page: https://arcnautical.com/data/ofac-sdn-vessel-ownership-resolution/

Abstract

This dataset is a public-source compilation. It lists a screened subset of IMO-bearing vessels that appeared on the U.S. Treasury OFAC Specially Designated Nationals (SDN) list as of 2026-09-16, and reports, per vessel: its flag state and flag-transparency tier, its OFAC sanctions program(s), and how far its ownership could be resolved in the public GLEIF Global LEI Index (screened as of 2026-09-16).

Inclusion of a vessel reflects its presence on the OFAC SDN snapshot of 2026-09-16 — a public fact. This dataset does not name owners, assert beneficial ownership or control, or include any proprietary risk scoring. It is a public-source data compilation with normalized and derived categorical fields.

Universe

Entries of type vessel on the OFAC SDN list that carry a 7-digit IMO number, de-duplicated by IMO, and present in the ArcNautical screening snapshot. 1,527 of 1,527 OFAC SDN-designated vessels-with-IMO were screened and are included. Rows are restricted to screened vessels so every row carries a real ownership-resolution stage.

Files

  • —data.csv — the dataset (1,527 rows, one per vessel).
  • —datapackage.json — Frictionless Data Package descriptor (Table Schema for data.csv).
  • —README.md — this file.

Data dictionary

ColumnTypeDescription
imostringIMO ship identification number (7 digits), the stable hull identifier.
vessel_namestringVessel name as listed on the OFAC SDN list.
vessel_typestringVessel type per the OFAC SDN remarks (may be empty).
flagstringFlag state per the OFAC SDN remarks (may be empty if OFAC did not record one).
flag_transparency_tierstringFlag-state UBO-transparency tier. Vessels flying a sanctioned state’s own flag (e.g. Russia, Iran, DPRK) classify as unclassified — the tier addresses open-registry / flag-of-convenience use, not the sanctioned state itself. Values: transparent, restricted, flag_of_convenience, unclassified.
ofac_programsstringOFAC sanctions program code(s) for the designation, semicolon-separated, as recorded in the OFAC SDN snapshot for this release (see provenance.dataasof).
sanctions_regimestringConvenience grouping of the OFAC program(s) into a regime (Iran, Russia, North Korea (DPRK), etc.), from the OFAC SDN snapshot for this release.
mmsistringMaritime Mobile Service Identity per the OFAC SDN remarks (may be empty).
call_signstringRadio call sign per the OFAC SDN remarks (may be empty).
ownership_resolution_stagestringHow far the vessel’s ownership resolves in the public GLEIF Global LEI Index. NOT beneficial ownership; a vessel with no GLEIF match may still have a registered owner in other records. Values: no_gleif_owner, registered_owner_no_parent, direct_parent_resolved, ultimate_parent_resolved.

Methodology

  • —Flag, vessel type, MMSI, and call sign are taken directly from the OFAC SDN record. The OFAC list version is its HTTP Last-Modified date (2026-09-16).
  • —flag_transparency_tier classifies the flag state by UBO-register transparency (transparent / restricted / flagofconvenience / unclassified).
  • —sanctions_regime groups the OFAC program code(s) into a regime; ofac_programs preserves the raw codes.
  • —ownership_resolution_stage is the deepest public-record resolution reached in the GLEIF Global LEI Index, using the same GLEIF modules as the ArcNautical vessel dossier.

Limitations

  • —GLEIF ≠ beneficial ownership. GLEIF resolves the corporate/consolidating parent, not the AML ultimate beneficial owner (a natural person). no_gleif_owner means not traceable in the public LEI register, not that the vessel has no owner — a registered owner may exist in a flag registry or commercial database without a GLEIF LEI.
  • —Snapshot, not live. Two dates apply: the OFAC list version (2026-09-16) and the GLEIF screening date (2026-09-16). Sanctions status and ownership change over time; vessels can be delisted.
  • —No owner identities and no proprietary scoring are included in this version.
  • —Coverage is bounded to OFAC SDN vessels with an IMO that were screened.

How to cite

ArcNautical (2026). OFAC SDN vessel records (screened subset), snapshot 2026-09-16: flag and public GLEIF ownership-resolution stage [Data set]. Zenodo. https://doi.org/10.5281/zenodo.22808695

Sources

Corrections

Spotted an error? Email corrections to admin@arcnautical.com with the IMO and the issue; fixes ship in the next versioned release.

Changelog

  • —v1 (2026-09-16): initial release — stage-only (flag, tier, program, GLEIF resolution stage). Owner identities are not included in v1.