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United States flag

SEA LION — Pleasure Craft · MMSI 367470340

USUnderway Using Engine
World map showing the last known position of SEA LION at 35° 50.220' N, 135° 8.231' E
NSEW
Current PositionLast report

SEA LION was last reported under way in the Sea of Japan, at 35.8370° N, 135.1372° E, on 7 Sep 2026, 21:41 UTC. It was sailing from INE to OKI with an ETA of 8 Sep 2026, 08:23 UTC.

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Updated 18 hours ago using terrestrial data
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Underway Using Engine
Current Navigational Status
8.0 kn
Speed
286.0°
/ 216°
Course / Heading
0 m
Static Draught
3 m
Current Draught

Voyage Tracker

Japan flag
INEJPINE
ATD
19:23 UTCSep 7, 2026
Japan flag
OKIJPOKI
ETA
08:23 UTCSep 8, 2026
SEA LION

SEA LION

Identity

Pleasure Craft
Type
United States flagUS
Flag
N/A
IMO Number
367470340
MMSI
WDK4857
Call Sign

Specifications

23 m × 6 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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4.6 ★ · 18,000 reviews

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Dive into the fleet, port, and flag state that SEA LION is part of.

Flag State
All US-flagged vessels
Browse every ship currently registered under the US flag, with live AIS positions.
Vessel Type
Browse all Pleasure Crafts
See the global fleet of pleasure crafts tracked on MarineRadar with live AIS data.
Departure Port
Port of INE
Port traffic, arrivals and live vessel positions for INE (JPINE).
Destination Port
Port of OKI
Arrivals, berth specifications, and live vessel traffic for OKI (JPOKI).

About SEA LION

Identity · Ownership · Class · Route

SEA LION — Pleasure Craft

SEA LION is a pleasure craft registered under the United States of America flag.

SEA LION route and voyage history

SEA LION is currently on a voyage from INE to OKI with an estimated arrival on 2026-09-08T08:23:00Z. The live route and current course of SEA LION 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 SEA LION can be seen in the Similar Vessels section above or in the full pleasure craft fleet at /vessel-type/yacht.

Frequently Asked Questions

Where is SEA LION right now?+
SEA LION was last reported under way in the Sea of Japan, within the Japan / Korea shipping lane, on 7 Sep 2026, 21:41 UTC. It was sailing from INE to OKI with an ETA of 8 Sep 2026, 08:23 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 SEA LION?+
SEA LION broadcasts MMSI 367470340, with call sign WDK4857. 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 SEA LION?+
SEA LION is classified as a pleasure craft vessel registered under the US flag. The vessel-type classification is derived from the AIS Type field broadcast by the ship's transponder; full pleasure craft fleet at /vessel-type/yacht and full US flag list at /flag/us.
How can I see the live position of SEA LION?+
MarineRadar shows the latest AIS broadcast from SEA LION 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 SEA LION'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 SEA LION?+
As a pleasure craft, SEA LION sits in the same design class as the other pleasure crafts listed in the Similar Vessels section of the vessel page, or in the full pleasure craft directory at /vessel-type/yacht.

SEA LION — Key Facts

MMSI
367470340
Call sign
WDK4857
Vessel type
Pleasure Craft
Flag state
US
Navigation status
Underway Using Engine
Current speed
8.0 knots
Course over ground
286.0°
Heading
216°
Last known position
35.8370°, 135.1372°
Destination
OKI
ETA
2026-09-08T08:23:00Z
Departure port
INE
Actual time of departure
2026-09-07T19:23:00Z
Current draught
3 m
Maximum static draught
0 m
AIS last updated
2026-09-07T21:41:13Z