What kind of ship is Keisen Maru?

Keisen Maru is an oil tanker sailing under the flag of Japan, built in 2012 by Kurinoura Dockyard. The vessel is 102 m long with a beam of 16 m and has a gross tonnage of 3,446.

What sanctions and inspection records does Voydar hold for Keisen Maru?

Voydar has no matched sanctions record displayed for Keisen Maru 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 Keisen Maru. Missing records do not establish whether the ship has been detained.

Keisen Maru

Oil tanker · Japan · built 2012 · AIS Class A

IMO9634737MMSI431003277Call signJD3308Last AIS position Sep 28, 2026, 16:31 UTC

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In short

Keisen Maru (Oil tanker, Japan flag) was last seen on AIS on Sep 28, 2026, 16:31 UTC, under way at 12 kn, near Wakayama (North Pacific Ocean). Voydar has no more recent AIS position for this ship. Its current location cannot be established from this report. Its crew-entered AIS destination is >JP UKB OFF; its reported draught is 5 m (voyage report via AISstream.io global terrestrial AIS, received Sep 28, 2026, 09:44 UTC).

Current voyage: from Kawasaki (departed Sep 26, 2026, 09:56 UTC) to >JP UKB OFF

Vessel type: Oil tanker
Flag: Japan
Year built: 2012
Gross tonnage: 3,446
Size (length × beam): 102 m × 16 m
Registered owner: —

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Last reported position

received Sep 28, 2026, 16:31 UTC

Position: 34.2432° N, 134.9898° E
Area: North Pacific Ocean
StatusWhat do AIS statuses mean?: Under way using engine
Speed: 12 kn
Course: 356°
Heading: 357°

34.2432° N, 134.9898° E

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Last 30 days: 1 port call (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: Keisen Maru
IMO numberWhat is an IMO number?: 9634737
MMSIWhat is an MMSI?: 431003277
Call signWhat is a call sign?: JD3308
Flag: Japan
Vessel type: Oil tanker
AIS ship type: Tanker
Gross tonnageGross tonnage vs deadweight: 3,446
Deadweight (DWT): Source: Wikidata, record Q117109118. Added to Voydar on September 23, 2026. Licence: CC0 1.0.4,999 t
Length overall: 102 m
Beam: 16 m
Year built: 2012

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.

Builder: Kurinoura Dockyard
Source: Wikidata · reported · confidence 0.8 · retrieved Sep 22, 2026

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
Sep 26, 2026, 09:56 UTC	Left KawasakiAIS-detected	Voydar port-call detector (AIS geofence)
Sep 25, 2026, 22:59 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
Kawasaki JPKWS	Sep 25, 2026, 22:59 UTC	Sep 26, 2026, 09:56 UTC	10 h 57 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.

Frequently asked questions

Where is Keisen Maru now?: Keisen Maru (Oil tanker, Japan flag) was last seen on AIS on Sep 28, 2026, 16:31 UTC, under way at 12 kn, near Wakayama (North Pacific Ocean). Voydar has no more recent AIS position for this ship. Its current location cannot be established from this report. The crew-entered destination was >JP UKB OFF (voyage report via AISstream.io global terrestrial AIS, received Sep 28, 2026, 09:44 UTC). This report does not confirm the ship’s current route.
What kind of ship is Keisen Maru?: Keisen Maru is an oil tanker sailing under the flag of Japan, built in 2012 by Kurinoura Dockyard. The vessel is 102 m long with a beam of 16 m and has a gross tonnage of 3,446.
What sanctions and inspection records does Voydar hold for Keisen Maru?: Voydar has no matched sanctions record displayed for Keisen Maru 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 Keisen Maru. Missing records do not establish whether the ship has been detained.

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