Specifications and Drawings



R/V Gulf Challenger Deck PlanR/V Gulf Challenger Deck Plan  

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General Information

Call Sign


Document Number


Class/Type Construction

USCG Subchapter T, Aluminum

Home Port

Portsmouth, NH


Licensed Captain and Mate


39 (day trips), 7 (overnight)



Fresh Water

325 gallons

Heating System

Proheat X45 Diesel fired forced hot water system. Low emissions design


Approximately 3 days (usually day trips up to 12 hours)


Roger Long Marine Architecture, Inc.


Gladding-Hearn Shipbuilding, Somerset, Mass.

Launch date

August 10, 1993





50 ft.


16 ft.


5 ft.

Minimum Clearance

19 ft. with mast and antennas lowered


25 tons


1100 gallons diesel

Cruising Speed

18 knots

Maximum Speed

22 knots

Minimum Speed

1.5 knots

Working Deck Space

Fantail, 240 sq. ft., with bolt pattern for temporary add-ons and quick disconnect outlets for hydraulics as well as 120 and 220 VAC


Approximately 6' x 8' below deck, with deep sink, running sea water, bench, window to work deck, cable runs, unistruts.  Additional space can be used in the pilot house and forecastle adjacent to the lab.


Spacious, with fresh water shower and wet suit racks

 Deck Gear

U-frame, Davits

Transom-mounted 6000-lb. capacity hydraulic U-frame; two 750-lb. capacity davits on foredeck

Winches Trawl/Coring Winch

Hawboldt Model HSF0820A hydraulic powered. 2000 lbs pulling capacity. 600+ meters of 1/4" plazma braid (SWL 6000 lbs.) installed on drum.

Oceanographic "Data" Winch

SeaMac Model 305H hydraulic powered. 1500 pulling capacity (winch can be removed from deck). 190 meters of .55 stainless armored wire with 5 ohm, 2 conductor coax.

Dedicated CTD Winch

Hawboldt Model SPR-1024/S hydraulic ocean science winch. Max line pull (bare drum); 1,600 lbs. @ 60 ft./min., Full pull: 1,200 lbs @ 80 ft./min with installed 400m of 0.322" cable, Moog-Focal Model 180 electrical slip ring with 4 passes and Subconn connectors. Local and remote wire in/out control.

 Engine & Marine Gear

Auxiliary Generator

Caterpillar C1.5 , 13.5 KW single phase at 1800 RPM, EPA tier 3 compliant

Electric Power

12 and 24 VDC, 110/220 VAC

Main Propulsion

Twin Caterpillar C-12 ACERT Compact. 660 BHP each at 2300 RPM. EPA Tier 2 compliant 

Marine Gears

ZF 360 A


Utility Vessels/Tenders

14' inflatable with 15-HP Yamaha 4-Stroke



Furuno GP-37 Differential/WAAS (Available for Science)

Electronic Navigation

RAYCHART 600 Chartview System, MAP Tech Professional


Raytheon R41XX and R70 Radar

Depth Sounders

Raytheon V8010 video


VHF-FM (2), SSB, cellular phone, portable VHF-FM (2)

Weather Station

Airmar PB150, displayed on Furuno RD-30, Values measured.  Wind speed and direction (true & apparent), barometric pressure, air temperature and Attitude (pitch, roll)


EM TRAK A100 Class A Transceiver

Other Notable Features

Ground Tackle

200-lb. Baldt Navy anchor, 85-lb. Fortress anchor, folding kedge anchor, Ideal anchor windlass with wildcat and winch head


U.S. Coast Guard Inspected

Passenger vessel standards, Ocean route


Category 1

Fire Fighting Equipment

Deck hose, portable extinguishers, fixed CO2 system in engine room


USCG first aid requirements plus Phillips Portable Defibrillator (AED) unit, DAN medical oxygen kit.


Stability in excess of Coast Guard requirements, ice-strengthened bow, double bottom between stringers, four watertight compartments, 1 compartment floodable


Life ring with light and line attached, 45 adult and 5 children's life jackets with lights and whistles, 50-person inflatable rescue platform, flares

 Science Gear


Furuno GP-37 Differential/WAAS

Gravity Corer

Core liner 2 5/8"(ID) x 4' 11" long


 Water Sampler/CTD Sea-Bird SBE55 ECO water sampler with 6 4-liter sample bottles, SBE 25 CTD, Integrated Benthos PSA 915 Altimeter and Biospherical QCR-2200 PAR sensor. Bottle firing and data is viewed in live time.  

Dedicated CTD Winch

Hawboldt SPR-1024/S A portable hydraulic winch that is paired with the SBE55 sampler.

Well/Moon Pool Gear

Accepts ADCP/Single Beam Equipment inquire for ADCP availability