Where is KOUSEIMARU NO3 now?

KOUSEIMARU NO3 (Cargo ship, Japan flag) was last seen on AIS on Oct 3, 2026, 19:04 UTC, at anchor, in the port of Chiba. The crew-entered destination was JP CHB OFF (voyage report via AISstream.io global terrestrial AIS, received Oct 3, 2026, 18:55 UTC). This report does not confirm the ship’s current route.

What kind of ship is KOUSEIMARU NO3?

KOUSEIMARU NO3 is a cargo ship sailing under the flag of Japan.

What sanctions and inspection records does Voydar hold for KOUSEIMARU NO3?

Voydar has no matched sanctions record displayed for KOUSEIMARU NO3 from the OFAC SDN list, the UK Sanctions List, the Canadian autonomous sanctions list, the EU list of designated vessels, the New Zealand Russia Sanctions Register and the French national asset-freeze register. Coverage may be incomplete; this is not sanctions clearance. No matched inspection records are displayed for KOUSEIMARU NO3. Missing records do not establish whether the ship has been detained.

KOUSEIMARU NO3

Cargo ship · Japan · AIS Class A

IMO9714379MMSI431004193Call signJD3480Last AIS position Oct 3, 2026, 19:04 UTC

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In short

KOUSEIMARU NO3 (Cargo ship, Japan flag) was last seen on AIS on Oct 3, 2026, 19:04 UTC, at anchor, in the port of Chiba. Its crew-entered AIS destination is JP CHB OFF, with an ETA of Oct 3, 2026, 17:30 UTC; its reported draught is 3.6 m (voyage report via AISstream.io global terrestrial AIS, received Oct 3, 2026, 18:55 UTC). It arrived there on Oct 3, 2026, 08:17 UTC.

Vessel type: Cargo ship
Flag: Japan
Year built: —
Gross tonnage: —
Size (length × beam): —
Registered owner: —

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Last reported position

received Oct 3, 2026, 19:04 UTC

Position: 35.5717° N, 140.0737° E
Area: North Pacific Ocean
StatusWhat do AIS statuses mean?: At anchor
Speed: 0 kn
Course: 295°
Heading: 45°

35.5717° N, 140.0737° E

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Last 30 days: 3 port calls (Chiba and Kawasaki).

Port calls are detected by Voydar from AIS (at least 30 minutes slow inside a harbour area); see Port calls below.

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Identity & particulars

Name: KOUSEIMARU NO3
IMO numberWhat is an IMO number?: 9714379
MMSIWhat is an MMSI?: 431004193
Call signWhat is a call sign?: JD3480
Flag: Japan
Vessel type: Cargo ship
AIS ship type: Cargo
Gross tonnageGross tonnage vs deadweight: —
Length overall: —
Beam: —
Year built: —

A tag next to a value names the register that supplied it (hover or tap it for the record and date). Values without a tag come from the ship's own AIS broadcasts or from Wikidata. Position and identity are derived live from AIS.

Ownership & management

Each line shows where the fact comes from. Links backed by an identifier point to the company page.

No owner, operator or manager is recorded for this vessel yet.

Timeline

Dated events for this ship from every source Voydar holds, newest first. Each line names its source; derived items say how they were derived.

Date	Event	Source
Oct 3, 2026, 08:17 UTC	Arrived at ChibaAIS-detected	Voydar port-call detector (AIS geofence)
Oct 2, 2026, 23:02 UTC	Left ChibaAIS-detected	Voydar port-call detector (AIS geofence)
Oct 2, 2026, 12:27 UTC	Arrived at ChibaAIS-detected	Voydar port-call detector (AIS geofence)
Sep 27, 2026, 05:24 UTC	Left KawasakiAIS-detected	Voydar port-call detector (AIS geofence)
Sep 26, 2026, 22:57 UTC	Arrived at KawasakiAIS-detected	Voydar port-call detector (AIS geofence)

Owner, operator and manager changes found by comparing yearly EU MRV reports are dated to the reporting year ("during 2025"), not to a day. Port calls here are the most recent only; the full lists are further down.

Port calls

Two kinds of evidence, kept apart: calls Voydar detected from the ship's AIS positions, and arrivals and departures published by port authorities and customs records.

Detected from AIS AIS-detected

Port	Arrived	Departed	Time in port
Chiba JPCHB	Oct 3, 2026, 08:17 UTC	in port	—
Chiba JPCHB	Oct 2, 2026, 12:27 UTC	Oct 2, 2026, 23:02 UTC	10 h 35 min
Kawasaki JPKWS	Sep 26, 2026, 22:57 UTC	Sep 27, 2026, 05:24 UTC	6 h 28 min

Detected by Voydar when the ship's AIS positions stayed slow inside a harbour area. Calls shorter than 30 minutes are not shown. Depends on AIS reception; detection started on June 8, 2026.

Behaviour at sea Voydar-derived

Patterns Voydar derived from this ship's AIS broadcasts. They are inferences, not reports: each one shows how it was computed and how confident we are, and none of them says why a ship behaved this way.

When	What we observed	Confidence
Oct 3, 2026, 09:19 UTC	Draught change Reported draught went from 4.8 m to 3.6 m while in port at Chiba. Voydar infers the ship probably discharged cargo. Method seadar.behaviour.draught_change v1	Medium (65%)
Sep 27, 2026, 04:32 UTC	Draught change Reported draught went from 4.5 m to 4 m while in port at Kawasaki. Voydar infers the ship probably discharged cargo. Method seadar.behaviour.draught_change v1	Medium (65%)

When

What we observed

Confidence

Oct 3, 2026, 09:19 UTC

Draught change

Reported draught went from 4.8 m to 3.6 m while in port at Chiba. Voydar infers the ship probably discharged cargo.

Method seadar.behaviour.draught_change v1

Medium (65%)

Sep 27, 2026, 04:32 UTC

Draught change

Reported draught went from 4.5 m to 4 m while in port at Kawasaki. Voydar infers the ship probably discharged cargo.

Method seadar.behaviour.draught_change v1

Medium (65%)

Source: AISstream.io global terrestrial AIS. AIS data: AISstream.io. Licence: none published.

Derived from AIS positions of feeds whose terms allow display on Voydar. Coverage is terrestrial: gaps are reported only where our receivers kept hearing other ships. Detections below medium confidence are not shown.

How these are computed →

Frequently asked questions

Where is KOUSEIMARU NO3 now?: KOUSEIMARU NO3 (Cargo ship, Japan flag) was last seen on AIS on Oct 3, 2026, 19:04 UTC, at anchor, in the port of Chiba. The crew-entered destination was JP CHB OFF (voyage report via AISstream.io global terrestrial AIS, received Oct 3, 2026, 18:55 UTC). This report does not confirm the ship’s current route.
What kind of ship is KOUSEIMARU NO3?: KOUSEIMARU NO3 is a cargo ship sailing under the flag of Japan.
What sanctions and inspection records does Voydar hold for KOUSEIMARU NO3?: Voydar has no matched sanctions record displayed for KOUSEIMARU NO3 from the OFAC SDN list, the UK Sanctions List, the Canadian autonomous sanctions list, the EU list of designated vessels, the New Zealand Russia Sanctions Register and the French national asset-freeze register. Coverage may be incomplete; this is not sanctions clearance. No matched inspection records are displayed for KOUSEIMARU NO3. Missing records do not establish whether the ship has been detained.

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