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Japan flag

ISUMI MARU — Tug · IMO 9901594

JPUndefined
World map showing the last known position of ISUMI MARU at 35° 21.490' N, 139° 53.780' E
NSEW
Current PositionLive

ISUMI MARU is currently positioned in the Sea of Japan, at 35.3582° N, 139.8963° E. It is sailing from YOKOHAMA to KISARAZU with an ETA of 7 Sep 2026, 03:50 UTC. AIS position received 8 Sep 2026, 16:48 UTC.

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Updated 26 minutes ago using terrestrial data
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Undefined
Current Navigational Status
0.0 kn
Speed
149.0°
/ 63°
Course / Heading
4 m
Static Draught
4 m
Current Draught

Voyage Tracker

ATD
00:25 UTCSep 7, 2026
ETA
03:50 UTCSep 7, 2026
ISUMI MARU

ISUMI MARU

Identity

Tug
Type
Japan flagJP
Flag
9901594
IMO Number
431015291
MMSI
JD4805
Call Sign

Specifications

37 m × 10 m
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 ISUMI MARU is part of.

Flag State
All JP-flagged vessels
Browse every ship currently registered under the JP flag, with live AIS positions.
Vessel Type
Browse all Tugs
See the global fleet of tugs tracked on MarineRadar with live AIS data.
Departure Port
Port of YOKOHAMA
Port traffic, arrivals and live vessel positions for YOKOHAMA (JPYOK).
Destination Port
Port of KISARAZU
Arrivals, berth specifications, and live vessel traffic for KISARAZU (JPKZU).

About ISUMI MARU

Identity · Ownership · Class · Route

ISUMI MARU — Tug

ISUMI MARU is a tug registered under the Japan flag.

ISUMI MARU route and voyage history

ISUMI MARU is currently on a voyage from YOKOHAMA to KISARAZU with an estimated arrival on 2026-09-07T03:50:00Z. The live route and current course of ISUMI MARU 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 ISUMI MARU can be seen in the Similar Vessels section above or in the full tug fleet at /vessel-type/tug-pilot-vessel.

  • MMSI: 431015291
  • IMO: 9901594
  • Call sign: JD4805
  • Vessel type: Tug
  • Flag state: Japan

Frequently Asked Questions

Where is ISUMI MARU right now?+
ISUMI MARU is currently in the Sea of Japan, within the Japan / Korea shipping lane. It is sailing from YOKOHAMA to KISARAZU with an ETA of 7 Sep 2026, 03:50 UTC. Its exact coordinates, speed and ETA are shown at the top of this page and refresh from the latest AIS broadcast.
What are the identifiers for ISUMI MARU?+
ISUMI MARU broadcasts MMSI 431015291 and is registered as IMO 9901594, with call sign JD4805. 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 ISUMI MARU?+
ISUMI MARU is classified as a tug vessel registered under the JP flag. The vessel-type classification is derived from the AIS Type field broadcast by the ship's transponder; full tug fleet at /vessel-type/tug-pilot-vessel and full JP flag list at /flag/jp.
How can I see the live position of ISUMI MARU?+
MarineRadar shows the latest AIS broadcast from ISUMI MARU 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 ISUMI MARU'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 ISUMI MARU?+
As a tug, ISUMI MARU sits in the same design class as the other tugs listed in the Similar Vessels section of the vessel page, or in the full tug directory at /vessel-type/tug-pilot-vessel.

ISUMI MARU — Key Facts

MMSI
431015291
IMO number
9901594
Call sign
JD4805
Vessel type
Tug
Flag state
JP
Navigation status
Undefined
Current speed
0.0 knots
Course over ground
149.0°
Heading
63°
Last known position
35.3582°, 139.8963°
Destination
KISARAZU
ETA
2026-09-07T03:50:00Z
Departure port
YOKOHAMA
Actual time of departure
2026-09-07T00:25:00Z
Current draught
4 m
Maximum static draught
4 m
Dead weight
0 t
AIS last updated
2026-09-08T16:48:00Z