The R/V Marcus G. Langseth  is a 235 ft, 3834 gross ton research vessel which is owned by the National Science Foundation and operated by Lamont-Doherty Earth Observatory of Columbia University.  The R/V Langseth  replaces the   R/V Maurice Ewing , which ended a distinguished career in early 2005.

The R/V Marcus G. Langseth  is classed by the American Bureau of Shipping as A-1 Baltic Ice Class IA and Coast Guard inspected; certificated to carry a total of 55 personnel of which approximately 20 are the ship's crew.

Originally constructed as a seismic vessel the Langseth   was acquired in 2004, modified, and outfitted to perform the tasks required of a general purpose research vessel. This includes hull mounted 3.5 and 12 khz transducers and a Simrad 1x1 degree deep ocean multibeam swath bottom mapping system.

Particularly unique to the academic research vessel are the extensive geophysical capabilites which include a Syntrak 960-24 seismic recording system with four 6km solid-state hydrophone streamer cable and a 2000 psi, 40 pneumatic sound source array towed in four "strings" that can be configured either as a single, 2D source or dual, alternating 3D source arrays.

The R/V Marcus G. Langseth  began science operations offshore Costa Rica in February 2008.



Built: 1991 Speed Cruising: 11kts
Yard Built: Ulstein (Norway) Speed Full: 13kts
Length (LOA) 71.5m / 235 ft Speed working: 0-11 kts
Beam(moulded): 17.0m / 56 ft Endurance Job dependent
Draft(max): 5.9m/ 19.5ft Range 13,500 nm
Gross Tonnage: 3834 Fuel capacity 1340m3 (353760 gal)
Lightship Displacement: 2578.4 Fuel Type; Marine Gas Oil
Crew 20 Bollard Pull 86.2 mt
Scientific Personnel: 35 Laboratory, existing:  
Call Sign WDC6698 Seismic Lab 218 m2/ 2345 ft2
IMO Number; 9010137 Other labs  
Registration: NY3360FG Main Dk Stbd Dry Lab 53 m2/570 ft2
    Main Dk Stbd Wet Lab 57 m2/613 ft2  
    Main Deck Pt Dry Lab 54 m2/ 581 ft2
    A-Deck Fwd Dry Lab 22 m2/ 237 ft2
    A-Deck Aft Dry Lab 21 m2/ 226 ft2
Propulsion Geared Diesel Propeller 2 x Ducted Variable Pitch
Main Engines 2 x Bergen BRG-6   Ulstein 4 blades
  2650kw /3550 hp (each) Rudder 2 x High Efficiency
Main Generators 2 x Shaft Generators   Becker Articulated
  1665 KVA each Seismic Air Source 2 x Ariel JGK4
Harbor Generator 1 x Diesel Generator 720 kw Seismic Air Capacity   2750 CFM @ 1950 psi each
Bowthruster 1 x Tunnel 590 kw/ 800 hp    
Ownership The National Science Foundation
Operator Lamont-Doherty Earth Observatory of Columbia University
Classification: ABS- A-1, Ice Class 1C, AMS