Overview
This lab report documents an intelligence capability demonstration using the OSINT360 AI-powered open-source intelligence platform developed by Nexvisionlab. The objective was to evaluate the platform's ability to surface timely, structured intelligence on recent vessel sanctions — a critical use case for maritime compliance, sanctions screening, and risk intelligence teams.
This particular investigation focused on US maritime sanctions and enforcement actions in May 2026, centred on the US–Iran confrontation in the Strait of Hormuz. The exercise demonstrates that iterative, increasingly specific natural-language queries yield progressively richer intelligence outputs — from high-level policy context down to named vessel identification, flag state attribution, and enforcement event timelines.
OSINT360 Intelligence Platform
OSINT360 is an AI-powered open-source intelligence platform that enables investigators and analysts to investigate domains, people, IP addresses, emails, and companies in plain English. The platform supports multiple investigation modules organised across 12 categories.
Category: News — Searches the open web for any topic, person, or entity using AI-powered search engines. Cost: ~1 credit per query.
The platform's AI layer interprets natural-language intent, formulates optimised search strategies, synthesises results from multiple web sources, and returns structured intelligence reports with inline citations and reference links.
Query Refinement Approach
The investigation followed an iterative query refinement methodology — beginning with a broad topical query and progressively narrowing scope to extract entity-level intelligence. This approach mirrors real-world OSINT tradecraft where analysts move from threat landscape mapping to specific target identification.
Moving from a topic-level query to requesting named entities unlocked vessel-level granularity — directly actionable for sanctions compliance screening and maritime risk monitoring workflows.
US Vessel Sanctions & Maritime Actions — May 2026
In May 2026, the United States continued an aggressive posture against Iranian vessels through a series of sanctions designations and maritime blockade enforcement. The actions target not only Iranian-linked vessels but also those engaged in illicit shipping practices that aid or benefit Iran's economy and oil exports.
Four individuals and one entity were removed from the U.S. narcotics trafficking sanctions list on April 1, 2026. While not vessel designations, these delistings reflect routine maintenance of the broader OFAC sanctions architecture underpinning maritime enforcement.
Multiple commercial vessels were attacked in the Strait of Hormuz between March 3 and 5, 2026, in the context of escalating US–Iran maritime tensions. The following vessels were identified:
US sanctions imposed in January 2025 on Russian oil tankers continued to affect fleet dynamics and compliance with the Russian crude price cap into early 2025. The downstream impact on maritime routing and vessel availability was noted as dependent on China's response to the designations.
The United States formally blacklisted the following vessels on April 16, 2026, targeting vessels engaged in sanctions evasion or illicit shipping practices:
On April 13, 2026, the US launched a counter-blockade targeting all ships seeking to reach Iranian ports. By April 29, US forces had intercepted 42 commercial vessels attempting to violate the blockade. Iran responded on April 18 by announcing the closure of the Strait of Hormuz, targeting any vessel approaching the strait.
| Event | Date | Detail |
|---|---|---|
| US counter-blockade launched | April 13, 2026 | All vessels bound for Iranian ports targeted |
| Iran closes Strait of Hormuz | April 18, 2026 | Any approaching vessel declared a target |
| Commercial vessels intercepted | By April 29, 2026 | 42 vessels intercepted attempting blockade violation |
Several enforcement incidents highlight the operational scope of the US maritime posture during this period:
- US strikes targeting alleged drug-smuggling boats in the eastern Pacific — February 17, 2026.
- US Coast Guard boarding of a Panama-flagged oil tanker in international waters east of Barbados on December 20, identifying the vessel as a sanctions target — April 14, 2026.
These actions reflect the US's continued effort to exert control over maritime trade and navigation through the Strait of Hormuz. The sanctions and blockades target not only Iranian vessels but also third-party vessels engaged in illicit shipping practices that aid or benefit Iran's economy — particularly regarding oil exports and related shipping practices.
Platform Performance Evaluation
| Capability | Observation | Rating |
|---|---|---|
| Natural language query understanding | Correctly interpreted vague temporal queries and mapped them to structured searches | ✦ Strong |
| Entity extraction (vessel names) | Named vessels with flag states and dates on second-pass specific query | ✦ Strong |
| Multi-source synthesis | Aggregated 10+ web sources including EU, GOV.UK, legal advisories | ✦ Strong |
| Citation transparency | Inline numbered citations with reference URLs provided | ✦ Strong |
| Temporal accuracy | Accurately surfaced May 2026-relevant events with correct effective dates | ◈ Good |
| Deep entity enrichment | IMO numbers and ownership chains are not retrieved in web_search mode — to get these, switch to the dedicated vessel module under a relevant category | ◈ Limited (by design) |
| Full sanctions detail lookup | Detailed sanctions records, listed programmes, and designation history require the Sanctions Check module (discovery_sanction) under the Sanctions category — not available via web_search alone | ◈ Use Sanctions Module |
Next Steps for Enhanced Monitoring
- Query individual vessel names (e.g., "investigate VIZURI vessel") via the platform's dedicated domain/entity modules to retrieve IMO numbers, ownership chains, flag state history, and AIS movement data.
- Establish recurring web_search queries on a weekly cadence to maintain a sanctions watchlist — OSINT360's investigation history feature enables longitudinal tracking.
- Cross-reference identified vessels against OFAC SDN lists and EU Consolidated Sanctions Lists using the platform's company/person investigation modules.
- Extend monitoring to include port state control detentions and flag state revocations, which often precede formal sanctions designations.
- Integrate findings into a structured vessel risk register, tagging each entity with sanctioning authority, effective date, and flag state for compliance reporting.
OSINT360's web_search module is well-suited for rapid maritime sanctions landscape monitoring. Its strength lies in synthesising dispersed open-source intelligence into structured, cited reports in under 60 seconds. For deeper vessel-level enrichment, pairing web_search with specialised maritime data modules would create a comprehensive sanctions screening workflow.
Summary
What used to take hours of manual research across government websites, legal bulletins, and news feeds was done here in two simple queries. OSINT360 pulled together the key events — vessel blacklistings, Hormuz Strait incidents, the US blockade of Iranian ports, and Iran's response — into a clear, sourced summary within seconds.
One thing that stood out in this exercise: the more specific your question, the better the answer. Starting broad gave us the policy picture. Asking for vessel names gave us the actual ships. That pattern — start wide, then drill down — works for just about any sanctions research task, and it doesn't require a specialist to do it.
If your team deals with shipping compliance, trade finance, port operations, or sanctions screening under OFAC, EU, or UK regimes, this kind of tool can genuinely save time and reduce the risk of missing something important. It won't replace expert judgment — but it gets you to the right information faster so your team can focus on decisions, not digging.
