🇯🇵 Japan
Pacific Ocean · Multi-Purpose Port
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None of the 16 vessels our AIS feed observed within 25 nm of Chiba between 29 Apr 2026 and 5 Aug 2026 broadcast an IMO number on the OFAC, EU, UK or UN sanctions list today. The feed saw only part of the traffic, so this does not mean no listed vessel called here. The feed has delivered no positions since 5 Aug 2026, so these figures will not change until it resumes.
Not listed
Chiba is not inside any Joint War Committee listed area (circular JWLA-035, 16 September 2026).
Source: Joint War Committee circular JWLA-035, 16 September 2026 (LMA/IUA), JWC Listed Areas for hull war, piracy, terrorism and related perils.
Between 29 Apr 2026 and 5 Aug 2026, ArcNautical's AIS feed observed 16 distinct vessels at Chiba, with Cargo making up 60% of those with a ship-type code — higher than the Pacific Ocean regional average of 52%. Voyages from Chiba in Japan cross the world's largest ocean basin, where route optimisation and weather routing have significant financial implications — a single transpacific crossing can consume hundreds of tonnes of fuel, and a one-knot speed variation over a 12-day voyage materially affects both cost and schedule. The western Pacific generates more tropical cyclones than any other basin (≈26 named storms annually), with typhoon season June–November producing winds above 150 knots and waves exceeding 15 metres. North Korea sanctions enforcement is a significant compliance concern: UN Security Council resolutions prohibit ship-to-ship transfers to DPRK vessels, and dark-activity (AIS disablement) is a common evasion signal in the East China Sea and Yellow Sea.
Routed sea distances from Chiba to the principal global hubs, computed by ArcNautical's routing engine — around land and through the canals a ship actually uses, not great-circle.
Our AIS feed observed 16 distinct vessels at Chiba between 29 Apr 2026 and 5 Aug 2026; 15 carry a confirmed AIS ship-type code. The most common categories:
The feed has delivered no positions since 5 Aug 2026, so these figures will not change until it resumes.
Chiba falls under the Tokyo MoU. The Tokyo Memorandum of Understanding (Asia-Pacific) maintains the most active publicly-available regional PSC programme. Across the last 24 months, the Tokyo MoU detention dataset records 5,577 distinct vessel detentions (sourced from OpenSanctions, as of 2026-10-04). Vessel-level detention probability is computed by ArcNautical using flag performance, vessel age, deficiency history, and ownership opacity.
The last 10 vessels our AIS feed recorded arriving between 29 Apr 2026 and 5 Aug 2026:
| Arrived | Vessel | Flag | Type |
|---|---|---|---|
| 2026-08-01 | SAKIZAYA UNICORN | 🇱🇷 LR | Cargo |
| 2026-07-30 | BISAN CLOVER | 🇯🇵 JP | Cargo |
| 2026-07-13 | EIZAN MARU NO.18 | 🇯🇵 JP | Tanker |
| 2026-07-12 | PRETTY MERAK | 🇱🇷 LR | Cargo |
| 2026-06-03 | BALABAC ISLAND | 🇵🇦 PA | Cargo |
| 2026-06-02 | YOUWAMARU | 🇯🇵 JP | Tanker |
| 2026-06-02 | HARU MARU NO.6 | 🇯🇵 JP | Cargo |
| 2026-06-02 | TAISHUNMARU | 🇯🇵 JP | Cargo |
| 2026-06-02 | YOSHU MARU NO.5 | 🇯🇵 JP | Cargo |
| 2026-05-30 | SHIN KOHO | 🇯🇵 JP | Cargo |
The feed has delivered no positions since 5 Aug 2026, so these figures will not change until it resumes.
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