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United States flag

SI — Sailing Vessel · MMSI 338227743

US
World map showing the last known position of SI at 37° 47.335' N, 122° 16.461' W
NSEW
Current PositionLast report

SI was last reported in the North Pacific Ocean, at 37.7889° N, 122.2743° W.

Show in Map
Updated — using terrestrial data
Live Satellite · latest position

See where SI is now

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Unknown
Current Navigational Status
0.0 kn
Speed
0.0°
/ ---
Course / Heading
---
Static Draught
---
Current Draught

Voyage Tracker

N/A
ATD
N/A
N/A
ETA
N/A
SI

SI

Identity

Sailing Vessel
Type
United States flagUS
Flag
N/A
IMO Number
338227743
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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Real-time AIS positions, voyage history, and arrival alerts for SI — straight from your phone.

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Dive into the fleet, port, and flag state that SI 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 Sailing Vessels
See the global fleet of sailing vessels tracked on MarineRadar with live AIS data.

About SI

Identity · Ownership · Class · Route

SI — Sailing Vessel

SI is a sailing vessel registered under the United States of America flag.

SI route and voyage history

The most recent AIS broadcast from SI is shown on the live map above. The live route and current course of SI 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 SI 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 SI right now?+
SI was last reported in the North Pacific Ocean, within the US West Coast shipping lane. 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 SI?+
SI broadcasts MMSI 338227743. 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 SI?+
SI is classified as a sailing vessel vessel registered under the US 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 US flag list at /flag/us.
How can I see the live position of SI?+
MarineRadar shows the latest AIS broadcast from SI 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 SI'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 SI?+
As a sailing vessel, SI 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.

SI — Key Facts

MMSI
338227743
Vessel type
Sailing Vessel
Flag state
US
Current speed
0.0 knots
Course over ground
0.0°
Last known position
37.7889°, -122.2743°