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United States flag

RIO GRANDE — Tug · MMSI 367585170

USPushing Ahead - Towing
World map showing the last known position of RIO GRANDE at 29° 18.628' N, 94° 52.391' W
NSEW
Current PositionLive

RIO GRANDE is currently under way in the Gulf of Mexico, at 29.3105° N, 94.8732° W, making 5.9 knots on a course of 50°. It is sailing from FREEPORT to CORPUS CHRISTI with an ETA of 12 Sep 2026, 11:00 UTC. AIS position received 8 Sep 2026, 15:13 UTC.

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Updated 18 minutes ago using terrestrial data
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Pushing Ahead - Towing
Current Navigational Status
5.9 kn
Speed
50.0°
/ 53°
Course / Heading
3.1 m
Static Draught
3.1 m
Current Draught

Voyage Tracker

ATD
07:41 UTCSep 8, 2026
ETA
11:00 UTCSep 12, 2026
RIO GRANDE

RIO GRANDE

Identity

Tug
Type
United States flagUS
Flag
N/A
IMO Number
367585170
MMSI
WDG9180
Call Sign

Specifications

25 m × 12 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 RIO GRANDE 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 Tugs
See the global fleet of tugs tracked on MarineRadar with live AIS data.
Departure Port
Port of FREEPORT
Port traffic, arrivals and live vessel positions for FREEPORT (USFPO).
Destination Port
Port of CORPUS CHRISTI
Arrivals, berth specifications, and live vessel traffic for CORPUS CHRISTI (USCRP).

About RIO GRANDE

Identity · Ownership · Class · Route

RIO GRANDE — Tug

RIO GRANDE is a tug registered under the United States of America flag.

RIO GRANDE route and voyage history

RIO GRANDE is currently on a voyage from FREEPORT to CORPUS CHRISTI with an estimated arrival on 2026-09-12T11:00:00Z. The live route and current course of RIO GRANDE 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 RIO GRANDE can be seen in the Similar Vessels section above or in the full tug fleet at /vessel-type/tug-pilot-vessel.

Frequently Asked Questions

Where is RIO GRANDE right now?+
RIO GRANDE is currently under way in the Gulf of Mexico. It is sailing from FREEPORT to CORPUS CHRISTI with an ETA of 12 Sep 2026, 11:00 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 RIO GRANDE?+
RIO GRANDE broadcasts MMSI 367585170, with call sign WDG9180. 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 RIO GRANDE?+
RIO GRANDE is classified as a tug vessel registered under the US flag. The vessel-type classification is derived from the AIS Type field broadcast by the ship's transponder; full tug fleet at /vessel-type/tug-pilot-vessel and full US flag list at /flag/us.
How can I see the live position of RIO GRANDE?+
MarineRadar shows the latest AIS broadcast from RIO GRANDE 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 RIO GRANDE'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 RIO GRANDE?+
As a tug, RIO GRANDE sits in the same design class as the other tugs listed in the Similar Vessels section of the vessel page, or in the full tug directory at /vessel-type/tug-pilot-vessel.

RIO GRANDE — Key Facts

MMSI
367585170
Call sign
WDG9180
Vessel type
Tug
Flag state
US
Navigation status
Pushing Ahead - Towing
Current speed
5.9 knots
Course over ground
50.0°
Heading
53°
Last known position
29.3105°, -94.8732°
Destination
CORPUS CHRISTI
ETA
2026-09-12T11:00:00Z
Departure port
FREEPORT
Actual time of departure
2026-09-08T07:41:00Z
Current draught
3.1 m
Maximum static draught
3.1 m
AIS last updated
2026-09-08T15:13:41Z