How to add voyage risk to a supply-chain platform
A practical integration guide for adding route-level maritime risk scores, drivers, and confidence to a supply-chain platform.
How to interpret a voyage-risk API response
How to use score, confidence, drivers, source status, and assessment time without reducing a voyage-risk response to a misleading traffic light.
102 OFAC-sanctioned ships trace to a Hong Kong company. Two fly the Hong Kong flag.
The Hong Kong flag is Paris/Tokyo MoU white-listed and clean. Yet 102 OFAC-sanctioned vessels are linked by OFAC to a Hong Kong-registered company — 72 distinct entities, almost none HK-flagged. The exposure is in the corporate layer, not the flag. Issue 01 of the ArcNautical Hong Kong Ownership-Layer Brief.
We open-sourced the routing engine behind ArcNautical's voyage scorer
Zero dependencies, 42 passing tests, 1,790 real-world routes with 0% land crossing, 510+ port database. The production routing engine that powers our voyage scoring is now free on npm under MIT.
Only 2.3% of the OFAC-sanctioned fleet flies a transparent flag
We ran every OFAC-designated vessel through the same flag classifier our dossiers use. Of 1,445 with a recorded flag, only 33 fly a transparent public-register flag. Issue 01 of the ArcNautical Dark-Fleet Flag Brief.
The EU just sanctioned a port in Indonesia. Quarterly screening is now a liability.
The EU's 20th sanctions package listed Karimun Oil Terminal — the first time Brussels has designated a third-country port for shadow-fleet activity. The compliance implications are larger than the headline.
How to Calculate Sea Routes in JavaScript
There's no good open-source maritime routing library in JavaScript. So we built one — A* on an ocean bitmap, 510+ ports, weather-aware ETA. Here's how it works.
The Ownership Opacity Problem: Why Binary Sanctions Screening Misses Multi-Hop Evasion
Binary vessel sanctions screening only checks vessel names against watchlists. It misses the multi-hop ownership chains that sanctions evaders actually use.
The Strait of Hormuz just closed. Here's what the data actually shows.
3,200 vessels stranded, 20,000 seafarers trapped, and war risk premiums still catching up. We ran the numbers on the largest chokepoint disruption in modern maritime history.
Three agencies track maritime piracy. They don't agree on the numbers.
IMB, ReCAAP, and UKMTO each publish piracy data. Their coverage areas overlap in some places, miss entirely in others, and classify the same incident differently. Here's what that means for anyone pricing risk.
The Malacca Strait is scoring disruption 50 right now. Here's what's behind the number.
94,000 vessels a year pass through a channel 1.5 nautical miles wide. Our chokepoint monitor currently shows Malacca at disruption 50 — the highest of any strait we track. Here's what the data says.
Your voyage scored 50. Here's what the ten signals behind that number actually mean.
JWC Listed Areas: 100. Sanctions Exposure: 100. Composite risk score: 50. A Fujairah-to-Djibouti tanker run decomposed signal by signal.
The marine insurance market is running on vibes
The JWC listed area committee meets quarterly. NAVWARNs update every 15 minutes. 369 are active right now. Somewhere between those two cadences, billions in war risk premiums get priced on institutional memory.
500 simulations, one voyage: how Monte Carlo turns ETA guesses into probability
A laden tanker on a 2,222nm Fujairah-to-Djibouti run has a 10% chance of arriving 157 hours late. Here's how we know that — and why a single ETA number is always wrong.
OFAC SDN: what the sanctions list actually contains (and why matching against it is hard)
The OFAC SDN list has 12,000+ entries. About 400 are vessels. Here's what the data looks like, why fuzzy matching matters, and what most screening tools get wrong.
What a fleet manager's morning actually looks like with real-time risk data
Five vessels, three active chokepoints on alert, 369 NAVWARNs. Here's how a mid-size fleet operator would actually use ArcNautical from login to first coffee.
We built a maritime intelligence platform. Here's why.
Most voyage risk tools are glorified spreadsheets. We wanted something that actually thinks about routes the way an underwriter does — so we built ArcNautical.
The Gulf of Aden problem: what the risk data actually shows
We ran every Fujairah-to-Djibouti route variant through 10 intelligence signals. The numbers tell a different story than the headlines.