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Take a virtual tour of the R/V Seawolf!

Mark Wiggins, Fleet Manager
School of Marine and Atmospheric Sciences
Stony Brook University Stony Brook, NY 11794-5000
Tel: 631-632-8677

Chris Harter, Captain
School of Marine and Atmospheric Sciences
Stony Brook University
Stony Brook NY 11794-5000
Mobile: 516-666-0569

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  • Built: 1982 by Washburn and Doughty Associates, Woolrich, ME
  • Conversion Design and Stability Investigation: Napier Company, Arbroath, Scotland
  • Hull type: Steel
  • Length: 80′
  • Beam: 21′
  • Draft: 11′
  • Gross Tons: 122
  • Net Tons: 97
  • Speed: 10 knots max, 3 knots min.1
  • Fuel Capacity: 7000 gal.
  • Water Capacity: 1300 gal.
  • Endurance: 12 days
  • Accommodations: Berths for 11. Full galley, shower/head, all compartments air conditioned/heated.
  • Main Engine: Cummins KT38M 800 hp. w/ Twin Disc 527 gear 4.75:1 reduction turning a 72″ single screw.
  • Generators: Two 3 phase 208v generators. Main power 85kW Northern Lights with 30kW Lister backup.
  • Clean Power: 3 kW central UPS. This system supplies 5 P3 computers (275W ea.) with 15-20 min reserve and 100% excess capacity.
  • Trawl Winches: 2 Pullmaster H25-7-86-5. Capacity: 2092m ½” wire rope. Bare Drum: line pull 25,000Lbs, line speed: payout 198m/min, retrieve 43m/min, Full Drum: line pull 8,208lbs, line speed: payout 604m/min, retrieve 130m/min. Both will rotate to align with center block on A frame and outboard trawl blocks.
  • Oceanographic Winch: 1 TBD.  Located on 01 deck. Capacity: 1100m .322″ 3 conductor electro-mechanical cable.  Drum will be replaceable in port with .25″ wire rope.  Winch will rotate to align with port side gantry and stern gantry.
  • Main Boom: 27′ vanged boom powered by 4 Pullmaster PL-5 winches for slewing, topping and hoisting functions.  Outboard reach 15′ maximum.  Estimated capacity 5000 lbs.  Mounted on mast above shelter deck keeping open deck space clear.
  • Gallows/Net Reel: Free standing gallows frames.  Removable 8′ diameter net drum.  Stern bulkheads enclosing stern ramp and supporting net drum completely removable, with a removable grating to span the stern ramp opening.  This allows for an open stern to the width of the A frame for general gear deployment. Full capabilities for bottom/midwater trawling.
  • Stern Gantry: 20′ clear opening height, width 12′ clear opening, 6 ton working load, 5 lift points, 8 ft. aft reach.
  • Port Side Gantry: Side U frame, one ton capacity, 8′ clear opening height, 5′ opening width, 4′ overboard/inboard reach.
  • Anchor Winch:  H10 Pullmaster winch, 900′ 5/8″ wire capacity, wheelhouse control with manual loss of power override.
  • Lab Space: Separate wet and dry labs.  Wet lab 120 sq. ft. Dry lab 128 sq. ft.  Air-conditioned, with fresh/seawater outlets, 110/220v outlets, 12v DC outlets.  Stainless steel cabling troughs for running permanent and transient wiring with pass-throughs for access to deck, moonpool, and wheelhouse.  Stainless steel double sinks and counter space completely removable or configurable to any requirements.
  • Overboard Discharge/Holding Tanks:   3 separate 325 gal. polyethylene tanks for sewage and gray water.  Ability for zero discharge when needed.
  • Hydraulic System: Vanged boom/oceanographic winch, side U frame and stern A frame powered by 3 10hp electric/hydraulic power packs with the coupling ability to increase capacity for transient equipment.  Main trawl winches, net drum and anchor winch controlled by main engine driven pumps with up to 70 gpm capacity.  Electrically controlled proportional valves for wheelhouse aft winch control station.
  • Deck Capacity: 600 sq. ft. work deck covered with rubberized asphalt deck tiles.   Eight 2″x 13′ stainless steel strips laid in fore and aft for welding down temporary mounts or equipment. 220v AC or 35gpm hydraulic power available for transient winches. Provisions to allow for an 8’x15′ portable van.
  • Moon Pool: 24″ diameter moonpool with access through wet lab deck.  Adaptable flange with locking tabs suited for a variety of mounts.  Approximate 9′ below waterline.
  • Wheelhouse Electronics: 72mi radar primary, 36 mi secondary radar, Furuno 1200 dual frequency sounder w/ 1kW 50/200 transducers and a 3kW 28khz transducer for 7200′ bottom detection, 2 ICOM VHF, SEA 222 sideband, Northstar 941/ internal differential primary GPS, Furuno GP 31 backup GPS, Nobeltec Visual Series PC charting

1 To be determined/tested

F/V Bagatell Conversion Diary

The Fishing Vessel Bagatell was purchased by NOAA to reduce the commercial fishing fleet and purchased by Stony Brook University to be converted into the Research Vessel Seawolf.  Then-Captain Steve Cluett logged the conversion process.  Check out the Conversion Diary!




Main Deck Level

Main Deck

Upper Deck Level

Upper Deck

Lower Deck Level

Lower Deck

Where is the Seawolf Now?

R/V Seawolf Profile on


The Articles below features the R/V Seawolf:

Bagatell Conversion Update September 11, 2000

The Bagatell's transformation continues at a great pace.  The wet and dry lab spaces are now framed in, as is the entrance to hold.  The substantial framing to support the winches on the labs' roof has been installed as specified.  The yard is in the process of laying...

Bagatell Conversion Update August 21, 2000

The Bagatell's appearance has changed quite a bit now that the entire deck bulwarks have been replaced.  The 3/8" plating on 3/8" stancions have been capped with 1/2" x 5" flatbar to make for substantial rails on the workdeck. The fabricators have done an excellent...

Bagatell Conversion Update August 10, 2000

Changes are occurring daily as the more visual aspects of the job are being done now that much of the underlying structure is complete.  The starboard side bulwarks from the stern to the cabin were completely removed.  The new bulwarks and outside wall of the new dry...

Bagatell Conversion Update July 30, 2000

Much of the last week's progress has been slowed by the continuous stretch of rain, making welding outside not the most prudent activity.  The biggest change noted is the stern bulwarks are now cut away.  Removable bulwarks are being fabricated to allow the vessel to...

Bagatell Conversion Update July 15, 2000

One month into the project, much of the necessary demolition on the Bagatell has taken place.  The old deck surfacing, doubler plates, fish hold hatches, winch beds and miscellaneous fittings have been cut away.  We were quite pleased to find the underlying deck in...

MSRC begins renovations on new Research Vessel

  The Marine Sciences Research Center has begun the renovation and conversion of an 80 foot vessel to serve as the center’s new research vessel, replacing the R/V Onrust after 25 years of service.  The new vessel is the former fishing vessel Bagatell, which...

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