Where is RIO GULF now?

RIO GULF (Tug, United States flag) was last seen on AIS on Oct 1, 2026, 21:13 UTC, moored, near Port Arthur (Gulf of Mexico). The crew-entered destination was USNSS >USBPT (voyage report via AISstream.io global terrestrial AIS, received Oct 1, 2026, 20:59 UTC). This report does not confirm the ship’s current route.

What kind of ship is RIO GULF?

RIO GULF is a tug sailing under the flag of United States.

What sanctions and inspection records does Voydar hold for RIO GULF?

Voydar has no matched sanctions record displayed for RIO GULF from the OFAC SDN list, the UK Sanctions List, the Canadian autonomous sanctions list, the EU list of designated vessels and the New Zealand Russia Sanctions Register. Coverage may be incomplete; this is not sanctions clearance. No matched inspection records are displayed for RIO GULF. Missing records do not establish whether the ship has been detained.

RIO GULF

Tug · United States · AIS Class A

IMO1089431MMSI368406380Call signWDQ2283Last AIS position Oct 1, 2026, 21:13 UTC

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In short

RIO GULF (Tug, United States flag) was last seen on AIS on Oct 1, 2026, 21:13 UTC, moored, near Port Arthur (Gulf of Mexico). Its crew-entered AIS destination is USNSS >USBPT (voyage report via AISstream.io global terrestrial AIS, received Oct 1, 2026, 20:59 UTC).

Current voyage: from Groves (departed Sep 21, 2026, 01:51 UTC) to USNSS >USBPT

Vessel type: Tug
Flag: United States
Year built: —
Gross tonnage: —
Size (length × beam): —
Registered owner: —

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Last reported position

received Oct 1, 2026, 21:13 UTC

Position: 29.8634° N, 93.936° W
Area: Gulf of Mexico
StatusWhat do AIS statuses mean?: Moored
Speed: 0 kn
Course: 229°
Heading: 330°

29.8634° N, 93.936° W

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Last 30 days: 1 port call (Groves).

Port calls are detected by Voydar from AIS (at least 30 minutes slow inside a harbour area); see Port calls below.

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Identity & particulars

Name: RIO GULF
IMO numberWhat is an IMO number?: 1089431
MMSIWhat is an MMSI?: 368406380
Call signWhat is a call sign?: WDQ2283
Flag: United States
Vessel type: Tug
Gross tonnageGross tonnage vs deadweight: —
Length overall: —
Beam: —
Year built: —

A tag next to a value names the register that supplied it (hover or tap it for the record and date). Values without a tag come from the ship's own AIS broadcasts or from Wikidata. Position and identity are derived live from AIS.

Ownership & management

Each line shows where the fact comes from. Links backed by an identifier point to the company page.

No owner, operator or manager is recorded for this vessel yet.

Timeline

Dated events for this ship from every source Voydar holds, newest first. Each line names its source; derived items say how they were derived.

Date	Event	Source
Sep 21, 2026, 01:51 UTC	Left GrovesAIS-detected	Voydar port-call detector (AIS geofence)
Sep 17, 2026, 22:26 UTC	Arrived at GrovesAIS-detected	Voydar port-call detector (AIS geofence)
Jul 4, 2026, 08:07 UTC	Left Port ArthurAIS-detected	Voydar port-call detector (AIS geofence)
Jul 1, 2026, 07:59 UTC	Arrived at Port ArthurAIS-detected	Voydar port-call detector (AIS geofence)
Jun 18, 2026, 14:26 UTC	Left AtrecoAIS-detected	Voydar port-call detector (AIS geofence)
Jun 16, 2026, 13:58 UTC	Arrived at AtrecoAIS-detected	Voydar port-call detector (AIS geofence)

Owner, operator and manager changes found by comparing yearly EU MRV reports are dated to the reporting year ("during 2025"), not to a day. Port calls here are the most recent only; the full lists are further down.

Port calls

Two kinds of evidence, kept apart: calls Voydar detected from the ship's AIS positions, and arrivals and departures published by port authorities and customs records.

Detected from AIS AIS-detected

Port	Arrived	Departed	Time in port
Groves USYGS	Sep 17, 2026, 22:26 UTC	Sep 21, 2026, 01:51 UTC	3 d 3 h
Port Arthur USPOA	Jul 1, 2026, 07:59 UTC	Jul 4, 2026, 08:07 UTC	3 d 0 h
Atreco USATR	Jun 16, 2026, 13:58 UTC	Jun 18, 2026, 14:26 UTC	2 d 0 h

Detected by Voydar when the ship's AIS positions stayed slow inside a harbour area. Calls shorter than 30 minutes are not shown. Depends on AIS reception; detection started on June 8, 2026.

Frequently asked questions

Where is RIO GULF now?: RIO GULF (Tug, United States flag) was last seen on AIS on Oct 1, 2026, 21:13 UTC, moored, near Port Arthur (Gulf of Mexico). The crew-entered destination was USNSS >USBPT (voyage report via AISstream.io global terrestrial AIS, received Oct 1, 2026, 20:59 UTC). This report does not confirm the ship’s current route.
What kind of ship is RIO GULF?: RIO GULF is a tug sailing under the flag of United States.
What sanctions and inspection records does Voydar hold for RIO GULF?: Voydar has no matched sanctions record displayed for RIO GULF from the OFAC SDN list, the UK Sanctions List, the Canadian autonomous sanctions list, the EU list of designated vessels and the New Zealand Russia Sanctions Register. Coverage may be incomplete; this is not sanctions clearance. No matched inspection records are displayed for RIO GULF. Missing records do not establish whether the ship has been detained.

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