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Japan flag

RIKI — Sailing Vessel · MMSI 431003724

JPClass B
World map showing the last known position of RIKI at 35° 37.945' N, 139° 50.665' E
NSEW
Current PositionNo recent signal

RIKI has not broadcast an AIS position for 29 days. Its most recent report placed it in the Sea of Japan, at 35.6324° N, 139.8444° E, on 11 Aug 2026, 03:38 UTC. It was sailing from TOKYO to KAWASAKI.

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Updated 28 days ago using terrestrial data
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Class B
Current Navigational Status
6.6 kn
Speed
3.0°
/ 83°
Course / Heading
---
Static Draught
---
Current Draught

Voyage Tracker

Japan flag
TOKYOJPTYO
ATD
23:51 UTCAug 8, 2026
ETA
03:24 UTCAug 11, 2026
RIKI

RIKI

Identity

Sailing Vessel
Type
Japan flagJP
Flag
N/A
IMO Number
431003724
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 RIKI 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 Sailing Vessels
See the global fleet of sailing vessels tracked on MarineRadar with live AIS data.
Departure Port
Port of TOKYO
Port traffic, arrivals and live vessel positions for TOKYO (JPTYO).
Destination Port
Port of KAWASAKI
Arrivals, berth specifications, and live vessel traffic for KAWASAKI (JPKWS).

About RIKI

Identity · Ownership · Class · Route

RIKI — Sailing Vessel

RIKI is a sailing vessel registered under the Japan flag.

RIKI route and voyage history

RIKI is currently on a voyage from TOKYO to KAWASAKI with an estimated arrival on 2026-08-11T03:24:00Z. The live route and current course of RIKI 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 RIKI can be seen in the Similar Vessels section above or in the full sailing vessel fleet at /vessel-type/yacht.

Frequently Asked Questions

Where is RIKI right now?+
RIKI has not broadcast an AIS position for 29 days. The most recent broadcast placed it in the Sea of Japan, on 11 Aug 2026, 03:38 UTC. It was sailing from TOKYO to KAWASAKI. 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 RIKI?+
RIKI broadcasts MMSI 431003724. 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 RIKI?+
RIKI is classified as a sailing vessel vessel registered under the JP flag. The vessel-type classification is derived from the AIS Type field broadcast by the ship's transponder; full sailing vessel fleet at /vessel-type/yacht and full JP flag list at /flag/jp.
How can I see the live position of RIKI?+
MarineRadar shows the latest AIS broadcast from RIKI 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 RIKI'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 RIKI?+
As a sailing vessel, RIKI sits in the same design class as the other sailing vessels listed in the Similar Vessels section of the vessel page, or in the full sailing vessel directory at /vessel-type/yacht.

RIKI — Key Facts

MMSI
431003724
Vessel type
Sailing Vessel
Flag state
JP
Navigation status
Class B
Current speed
6.6 knots
Course over ground
3.0°
Heading
83°
Last known position
35.6324°, 139.8444°
Destination
KAWASAKI
ETA
2026-08-11T03:24:00Z
Departure port
TOKYO
Actual time of departure
2026-08-08T23:51:00Z
AIS last updated
2026-08-11T03:38:00Z