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Japan flag

NO.1 YAMASEN — Other · MMSI 431017792

JPClass B
World map showing the last known position of NO.1 YAMASEN at 40° 32.406' N, 141° 32.817' E
NSEW
Current PositionNo recent signal

NO.1 YAMASEN has not broadcast an AIS position for 18 days. Its most recent report placed it in the Sea of Japan, at 40.5401° N, 141.5470° E, on 21 Aug 2026, 10:16 UTC. It was sailing from HACHINOHE to CLASS B.

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Updated 18 days ago using terrestrial data
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Class B
Current Navigational Status
12.3 kn
Speed
358.0°
/ ---
Course / Heading
---
Static Draught
---
Current Draught

Voyage Tracker

ATD
12:02 UTCAug 6, 2026
CLASS B
ETA
11:06 UTCAug 17, 2026
NO.1 YAMASEN

NO.1 YAMASEN

Identity

Other
Type
Japan flagJP
Flag
N/A
IMO Number
431017792
MMSI
N/A
Call Sign

Specifications

N/A
Length × Breadth
N/A
Year Built
N/A
Deadweight
N/A
Gross Tonnage
N/A
Engine Power
N/A
Builder
N/A
Class Society
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Dive into the fleet, port, and flag state that NO.1 YAMASEN is part of.

Flag State
All JP-flagged vessels
Browse every ship currently registered under the JP flag, with live AIS positions.
Departure Port
Port of HACHINOHE
Port traffic, arrivals and live vessel positions for HACHINOHE (JPHHE).

About NO.1 YAMASEN

Identity · Ownership · Class · Route

NO.1 YAMASEN — Vessel

NO.1 YAMASEN is a maritime vessel registered under the Japan flag.

NO.1 YAMASEN route and voyage history

NO.1 YAMASEN most recently departed HACHINOHE. The live route and current course of NO.1 YAMASEN are shown on the bridge map above, updated whenever the vessel is in range of a coastal AIS receiver or a satellite pass.

Vessel class and identifiers

Vessels in the same class as NO.1 YAMASEN can be seen in the Similar Vessels section above.

  • MMSI: 431017792
  • Flag state: Japan

Frequently Asked Questions

Where is NO.1 YAMASEN right now?+
NO.1 YAMASEN has not broadcast an AIS position for 18 days. The most recent broadcast placed it in the Sea of Japan, on 21 Aug 2026, 10:16 UTC. It was sailing from HACHINOHE to CLASS B. Vessels stop appearing on terrestrial AIS when they move beyond receiver range, so a gap does not necessarily mean the vessel is inactive.
What are the identifiers for NO.1 YAMASEN?+
NO.1 YAMASEN broadcasts MMSI 431017792. The MMSI is the radio identifier used by AIS; the IMO number stays with the ship for life and does not change with re-flagging or sale.
What type of ship is NO.1 YAMASEN?+
NO.1 YAMASEN is a maritime vessel registered under the JP flag. The vessel-type classification is derived from the AIS Type field broadcast by the ship's transponder and full JP flag list at /flag/jp.
How can I see the live position of NO.1 YAMASEN?+
MarineRadar shows the latest AIS broadcast from NO.1 YAMASEN above, with current position, course, speed, and navigation status. Tap "View on map" to centre the live tracker on the vessel and watch its movement update in real time. The same data is available offline-friendly in the iOS and Android apps.
How often is NO.1 YAMASEN's position updated?+
AIS transponders broadcast position every 2 seconds when underway at high speed and up to every 3 minutes at anchor. The position you see refreshes whenever the ship is in range of a coastal AIS receiver or a satellite pass — typically seconds in coastal waters and minutes offshore.
What class is NO.1 YAMASEN?+
The vessel's design class is inferred from its dimensions, gross tonnage and dead weight, all of which are listed in the Identity and Specifications panels on the vessel page.

NO.1 YAMASEN — Key Facts

MMSI
431017792
Vessel type
Unknown
Flag state
JP
Navigation status
Class B
Current speed
12.3 knots
Course over ground
358.0°
Last known position
40.5401°, 141.5470°
Destination
CLASS B
ETA
2026-08-17T11:06:00Z
Departure port
HACHINOHE
Actual time of departure
2026-08-06T12:02:00Z
AIS last updated
2026-08-21T10:16:00Z