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United States flag

CHALLENGER — SAR · MMSI 338475762

USStopped
World map showing the last known position of CHALLENGER at 37° 39.779' N, 122° 22.596' W
NSEW
Current PositionLast report

CHALLENGER was last reported in the North Pacific Ocean, at 37.6630° N, 122.3766° W, on 6 Sep 2026, 00:05 UTC. It was sailing from EAST MARINA to OYSTER POINT with an ETA of 2 Sep 2026, 22:38 UTC.

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Updated 2 days ago using terrestrial data
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Stopped
Current Navigational Status
0.1 kn
Speed
0.0°
/ 51°
Course / Heading
---
Static Draught
---
Current Draught

Voyage Tracker

ATD
22:09 UTCSep 2, 2026
ETA
22:38 UTCSep 2, 2026
CHALLENGER

CHALLENGER

Identity

SAR
Type
United States flagUS
Flag
N/A
IMO Number
338475762
MMSI
N/A
Call Sign

Specifications

9 m × 4 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 CHALLENGER 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 SARs
See the global fleet of sars tracked on MarineRadar with live AIS data.
Departure Port
Port of EAST MARINA
Port traffic, arrivals and live vessel positions for EAST MARINA (USSYF).

About CHALLENGER

Identity · Ownership · Class · Route

CHALLENGER — SAR

CHALLENGER is a sar registered under the United States of America flag.

CHALLENGER route and voyage history

CHALLENGER is currently on a voyage from EAST MARINA to OYSTER POINT with an estimated arrival on 2026-09-02T22:38:00Z. The live route and current course of CHALLENGER 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 CHALLENGER can be seen in the Similar Vessels section above or in the full sar fleet at /vessel-type/tug-pilot-vessel.

Frequently Asked Questions

Where is CHALLENGER right now?+
CHALLENGER was last reported in the North Pacific Ocean, within the US West Coast shipping lane, on 6 Sep 2026, 00:05 UTC. It was sailing from EAST MARINA to OYSTER POINT with an ETA of 2 Sep 2026, 22:38 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 CHALLENGER?+
CHALLENGER broadcasts MMSI 338475762. 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 CHALLENGER?+
CHALLENGER is classified as a sar vessel registered under the US flag. The vessel-type classification is derived from the AIS Type field broadcast by the ship's transponder; full sar fleet at /vessel-type/tug-pilot-vessel and full US flag list at /flag/us.
How can I see the live position of CHALLENGER?+
MarineRadar shows the latest AIS broadcast from CHALLENGER 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 CHALLENGER'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 CHALLENGER?+
As a sar, CHALLENGER sits in the same design class as the other sars listed in the Similar Vessels section of the vessel page, or in the full sar directory at /vessel-type/tug-pilot-vessel.

CHALLENGER — Key Facts

MMSI
338475762
Vessel type
SAR
Flag state
US
Navigation status
Stopped
Current speed
0.1 knots
Course over ground
0.0°
Heading
51°
Last known position
37.6630°, -122.3766°
Destination
OYSTER POINT
ETA
2026-09-02T22:38:00Z
Departure port
EAST MARINA
Actual time of departure
2026-09-02T22:09:00Z
AIS last updated
2026-09-06T00:05:30Z