Where is MARCUS G. LANGSETH now?

MARCUS G. LANGSETH (Research vessel, United States flag) was last seen on AIS on Oct 4, 2026, 18:37 UTC, moored, near Vigo (North Atlantic Ocean). The crew-entered destination was USORF ESVGO (voyage report via AISstream.io global terrestrial AIS, received Oct 4, 2026, 16:17 UTC). This report does not confirm the ship’s current route.

What kind of ship is MARCUS G. LANGSETH?

MARCUS G. LANGSETH is a research vessel sailing under the flag of United States, built in 1991 by Ulstein Verft. The vessel is 71.5 m long with a beam of 17 m and has a gross tonnage of 3,834.

Who is recorded as the owner or manager of MARCUS G. LANGSETH?

National Science Foundation is recorded as Registered owner for MARCUS G. LANGSETH (source: Wikidata). This source record does not independently confirm today’s ownership or management.

What sanctions and inspection records does Voydar hold for MARCUS G. LANGSETH?

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

MARCUS G. LANGSETH

Research vessel · United States · built 1991 · AIS Class A

IMO9010137MMSI367059880Call signWDC6698Last AIS position Oct 4, 2026, 18:37 UTC

Open in Terminal

In short

MARCUS G. LANGSETH (Research vessel, United States flag) was last seen on AIS on Oct 4, 2026, 18:37 UTC, moored, near Vigo (North Atlantic Ocean). Its crew-entered AIS destination is USORF ESVGO; its reported draught is 6.1 m (voyage report via AISstream.io global terrestrial AIS, received Oct 4, 2026, 16:17 UTC). Registered owner: National Science Foundation (source: Wikidata). It has a crew of 20 (source: Wikidata).

Vessel type: Research vessel
Flag: United States
Year built: 1991
Gross tonnage: 3,834
Size (length × beam): 72 m × 17 m
Registered owner: National Science Foundation

Watch this ship

Get an email when MARCUS G. LANGSETH arrives or leaves port, changes destination, name, flag or owner, or is sanctioned, detained or named in an official release.

We email you a link and a code. That creates a free account, no password or card, and follows MARCUS G. LANGSETH.

Free account, no card: follow up to 5 ships and ports. Plus follows 50, Pro 500.

By continuing you accept the Terms and the Privacy policy.

Photo of RV Marcus G. Langseth — Photo: Office of Marine Operations, LDEO · Licence: GFDL · via Wikimedia Commons

Last reported position

received Oct 4, 2026, 18:37 UTC

Position: 42.2596° N, 8.6886° W
Area: North Atlantic Ocean
StatusWhat do AIS statuses mean?: Moored
Speed: 0.1 kn
Course: 201°
Heading: 347°

42.2596° N, 8.6886° W

Open the full live map →

Voydar detected no port call in the last 30 days.

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

A year of history in the Terminal (Plus) · the full archive since June 1, 2026 (Pro)

Try the live demo, no sign-up

Identity & particulars

Name: MARCUS G. LANGSETH
IMO numberWhat is an IMO number?: 9010137
MMSIWhat is an MMSI?: 367059880
Call signWhat is a call sign?: WDC6698
Flag: United States
Vessel type: Research vessel
AIS ship type: Other
Gross tonnageGross tonnage vs deadweight: 3,834
Deadweight (DWT): Source: Wikidata, record Q7278050. Added to Voydar on September 23, 2026. Licence: CC0 1.0.2,620 t
Length overall: 71.5 m
Beam: 17 m
Year built: 1991
Crew: Source: Wikidata, record Q7278050. Added to Voydar on September 23, 2026. Licence: CC0 1.0.20

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.

Registered owner: National Science Foundation
Source: Wikidata · reported · confidence 0.8 · retrieved Sep 22, 2026
Operator: Lamont–Doherty Earth Observatory
Source: Wikidata · reported · confidence 0.8 · retrieved Sep 22, 2026
Builder: Ulstein Verft
Source: Wikidata · reported · confidence 0.8 · retrieved Sep 22, 2026

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
Oct 5, 2016	Reported departure from TampaAuthority-reported	USACE foreign traffic vessel entrances & clearances
Apr 9, 2016	Reported arrival at JACKSONVILLE HARBOR, FLAuthority-reported	USACE foreign traffic vessel entrances & clearances
Oct 16, 2015	Reported departure from New YorkAuthority-reported	USACE foreign traffic vessel entrances & clearances

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.

Reported by authorities Authority-reported

Port	Record	Date (UTC)	Berth	Source
Tampa USTPA	Departure	Oct 5, 2016(date only)	—	USACE foreign traffic vessel entrances & clearances
JACKSONVILLE HARBOR, FL	Arrival	Apr 9, 2016(date only)	—	USACE foreign traffic vessel entrances & clearances
New York USNYC	Departure	Oct 16, 2015(date only)	—	USACE foreign traffic vessel entrances & clearances
WOODS HOLE CHANNEL, MA	Arrival	Sep 27, 2013(date only)	—	USACE foreign traffic vessel entrances & clearances
Galveston USGLS	Departure	Mar 29, 2013(date only)	—	USACE foreign traffic vessel entrances & clearances
Galveston USGLS	Arrival	Mar 21, 2013(date only)	—	USACE foreign traffic vessel entrances & clearances
YAQUINA BAY AND HARBOR, OR	Departure	Feb 26, 2013(date only)	—	USACE foreign traffic vessel entrances & clearances
Honolulu USHNL	Arrival	Apr 15, 2012(date only)	—	USACE foreign traffic vessel entrances & clearances
San Diego USSAN	Arrival	May 23, 2011(date only)	—	USACE foreign traffic vessel entrances & clearances
San Diego USSAN	Departure	Mar 28, 2011(date only)	—	USACE foreign traffic vessel entrances & clearances
Honolulu USHNL	Arrival	Sep 13, 2010(date only)	—	USACE foreign traffic vessel entrances & clearances
Honolulu USHNL	Departure	May 28, 2010(date only)	—	USACE foreign traffic vessel entrances & clearances

Records published by the authority named on each row. Earliest record for this ship: March 14, 2007.

Source: US Army Corps of Engineers, Waterborne Commerce Statistics Center (US CBP entrance/clearance records). Licence: US Government work — public domain.

About MARCUS G. LANGSETH

RV Marcus Langseth is a research vessel operated by the Lamont–Doherty Earth Observatory (LDEO) of Columbia University as a part of the University-National Oceanographic Laboratory System (UNOLS) fleet. The Marcus G. Langseth was dedicated on December 4, 2007, came into service in early 2008, replacing the RV Maurice Ewing. Marcus G. Langseth is intended primarily to collect multichannel seismic data, including 3-D surveys. The ship was purchased from the geophysical survey company WesternGeco in 2004, having previously been named Western Legend. The Marcus G. Langseth was named for Marcus G. Langseth, a Lamont scientist. In March 2009, Chinese authorities denied the vessel permission to pass between Taiwan and China. In August 2009, Marcus G. Langseth was named in a Canadian lawsuit seeking to halt its seismic tomography experiment.

Summary from Wikipedia, licensed CC BY-SA.

Frequently asked questions

Where is MARCUS G. LANGSETH now?: MARCUS G. LANGSETH (Research vessel, United States flag) was last seen on AIS on Oct 4, 2026, 18:37 UTC, moored, near Vigo (North Atlantic Ocean). The crew-entered destination was USORF ESVGO (voyage report via AISstream.io global terrestrial AIS, received Oct 4, 2026, 16:17 UTC). This report does not confirm the ship’s current route.
What kind of ship is MARCUS G. LANGSETH?: MARCUS G. LANGSETH is a research vessel sailing under the flag of United States, built in 1991 by Ulstein Verft. The vessel is 71.5 m long with a beam of 17 m and has a gross tonnage of 3,834.
Who is recorded as the owner or manager of MARCUS G. LANGSETH?: National Science Foundation is recorded as Registered owner for MARCUS G. LANGSETH (source: Wikidata). This source record does not independently confirm today’s ownership or management.
What sanctions and inspection records does Voydar hold for MARCUS G. LANGSETH?: Voydar has no matched sanctions record displayed for MARCUS G. LANGSETH from the OFAC SDN list, the UK Sanctions List, the Canadian autonomous sanctions list, the EU list of designated vessels, the New Zealand Russia Sanctions Register and the French national asset-freeze register. Coverage may be incomplete; this is not sanctions clearance. No matched inspection records are displayed for MARCUS G. LANGSETH. Missing records do not establish whether the ship has been detained.

Use this data

This page is also available as JSON, free, with the source and licence of every section. Sections whose sources do not permit redistribution are listed as withheld.

GET /api/v1/vessels/9010137

View JSON API documentationFree without a key for occasional use; use an API key for more.

Follow by RSS Open data

Using this data in code?

Every account gets a personal API allowance: 2,500 credits a month free, 25,000 with Pro. Pro adds internal business use; API plans add building the data into your own products.

See plans