Maria Cleofas Vessel Specifications

The Maria Cleofas is the link to your mission’s goals along the ocean’s last great frontiers.

The long-range expedition vessel, Maria Cleofas, is the perfect balance of ruggedness and comfort. Adept at leading tactical adventures, conducting research projects and providing media hosting from the ocean’s most remote edge to the largest seaboard metropolis.

The 128-foot Maria Cleofas is an unparalleled advanced expedition utility vessel. From the hull up, she was carefully designed as a luxurious, long- range surf-access craft, equipped to take elite crews to the most remote frontiers. The significance of this design lies in the vessel’s ability to provide unrivaled seaworthiness, comfort and enjoyment to guests, research teams and film crews. The Maria Cleofas carries 55,000 gallons of fuel providing a 12,000 mile range with the capacity to make 3,000 gallons of fresh water a day this vessel offers access with extended stays to remote and often otherwise inaccessible destinations around the globe.

After a successful King Crab career in the Bering Sea’s deadliest fishery, the Maria Cleofas was transformed into the finest long-range, ocean–roving powerhouse in her class. With ample deck space and a five ton crane this is the perfect platform to launch and support ocean specific vessels and advanced technical equipment. As a single engine long range vessel her costs of operation are substantially lower than other vessels of similar size. The Maria Cleofas is immaculately outfitted with six double occupancy state rooms featuring en- suite bath, sundeck lounge bar and dining area, home theater, editing suite, 24’ Willard RHIB, 21’ Greenough Surf Skiff, 18’ Nautica RHIB and two Yamaha Waverunners providing you with a 5-star explorer for professional or private use.

Our private administration and engineering team overseas all management, scheduling, crewing, maintenance and other aspects of keeping the Maria Cleofas true to all adventure-finding missions and goals. Together they represent a seasoned professional crew of the most qualified ocean oriented people. They possess an intimate knowledge of the design and hands- on experience in the construction of the Maria Cleofas as well as years of experience running charters in remote locations.

The Maria Cleofas has proven herself in the most extreme conditions. She is the most stable and seaworthy vessel in her class and is perfectly primed for the adventures ahead.

Maria Cleofas Overview Video


  • Length: 128 feet
  • Beam: 33 feet
  • Draft: +/- 14 feet
  • Speed: 10 Knots
  • Range: 12,000 Nautical Miles
  • Fuel Capacity: 55,000 Gal
  • Fresh Water: 1,000 Gal
  • Water Maker: 3,000 Gal/Day
  • Crane: Hydraulic 5 Ton
  • Construction: Steel and Aluminum
  • Builder: Martinolich Shipbuilding

Maria Cleofas Deck Layout

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Maria Cleofas Deck Layout


  • Six Deluxe Staterooms with En-Suite Bath
  • Large Professional Galley
  • Walk In Cool Room and Freezer
  • 270 Degree Sun Deck Lounge
  • On Board Engineering Shop
  • 10.080 kW Solar Power System
  • Large Swim-Step
  • Plush Theater

The working deck of the Maria Cleofas is designed for maximum function in a defined space. It measures 36ft long by 32 feet wide.

The five ton knuckle crane booms out to 51 feet. It is a work horse and securely lifts the ship’s game boats and tenders onto and off of the deck. The cradles system on deck can be modified to accommodate a wide range of water craft. There is also a protected area where a saltwater wet lab can be created.


Hurricane Bar/Sundeck Lounge

  • Beer Keg Refrigerator with Tap
  • Wolf Warming Drawer
  • DCS Propane BBQ Grill
  • Induction Burner
  • Scottsman Icemaker
  • Table Seating for 14
  • Custom Lounges
  • Mood Lighting
  • JBL Sound System
  • Wash Sink


  • Two VIP State Rooms with King and Twin Beds
  • Three State Rooms with Queen and Twin Beds
  • One State Room with Queen Bed
  • Large Landscape Windows
  • All with En-Suite Bathrooms Dresser and Computer Desk
  • Crew Accomodations for Nine with Three Crew Bathrooms


  • Pioneer Flat Screen
  • Denon Receiver and DVD
  • Hard Drive Movie Library
  • 11-Point Surround Sound
  • Mood Lighting
  • Shag Carpet


  • Wolf Six Burner Commercial Range
  • Viking Exhaust Hood
  • Wolf Microwave
  • JennAir Refrigerator / Freezer
  • Jet-tech Dishwasher
  • Summit Drinks Refrigerator and Icemaker
  • Booth Seating for 12
  • Viewsonic Flat Screen
  • Bose Entertainment System

Pilot House


  • Si-Tex Color Max II C-MAP Chart Plotter
  • Nobeltec Navigation
  • Furuno Sounder FCV-1100L
  • Furuno Sounder FCV-271
  • Furuno Marine Radar FR8100D
  • Furuno Marine Radar 1942 MK2
  • Furuno Universal AIS
  • Furuno Satellite Compass
  • Simrad AP50 Autopilot
  • Navtrac XL GPS
  • NT Trimble GPS


  • ICOM Marine VHF IC-422
  • SSB SEA222 WDC 7961
  • Standard Horizon VHF with Hailer
  • Horizon LH5 Hailer
  • Standard Handheld VHF

Satellite Phones

  • Iridium Fleet One Data / Telephone
  • Iridium Satellite Telephone
  • Iridium Handheld Telephone


  • Dell Laptop
  • Dell Desktop
  • Samsung Monitors (3)
  • Battery Back up for Computers
  • HP Officejet All in One Printer


Main Engine

  • Mitsubishi S12R-MPTA 1,140 HP Twin Turbo
  • ZF Transmission BW461
  • Twin Disc EC 200 Electronic Engine Controls
  • 6” Stainless Shaft
  • Hydraulic Steering
  • Propeller –Five Blade Stainless 84 inches

Bow Thruster

  • Wesmar 175 hp


  • Starboard – MER 65kw
  • Port – MER 65kw
  • Aft – MER 40kw

Photovoltaic System (Solar Power System)

The Maria Cleofas is a 131 foot research vessel designed to support an 12 person marine research team. The 10.080 kW PV Array consisting of 36 each 280 watt PV modules, (12 x Series, 3 x parallel) has been specified to offset diesel generator fuel costs by supporting all of the vessel’s critical electrical loads during daytime hours. A 4,734 amp hour VRLA 48 VDC battery system is used to absorb the heavy current draw from larger inductive loads such as air conditioning and refrigeration.

  • PV system power: 10.080 kWp
  • Annual Production: approx. 100,790 kWh (9,999 kWh/kWp)
  • CO2 avoided: Approx. 70.6 tons per annum
  • Modules: 36 x Hyundai Heavy Industries Co. Ltd. HIS-M 280-MI (UL) (06/2011)
  • Azimuth angle: 180°
  • Angle of Inclination: 0°
  • Communication: Sunny WebBox
  • Inverter: 3 Sunny Boy 3800TL-US-22
    Sunny Island 6048U

Electrical Equipment

  • AC – 120 and 240 Volt Systems
  • DC – 12 and 24 Volt Systems

Ground Tackle

  • 1,500 lb Anchor
  • Hydraulic 40” Drum Winch
  • 30 Fathoms of 1 1/8” Stud Link and 1” Cable


  • Village Marine Tec PW 1200
  • Village Marine Tec PW 600

Bilge / Pumps

  • Baldor Electric 10hp
  • 230 VAC Pumps (2)
  • Peabody and Barnes Centrifugal (2)


  • Total Diesel Fuel 55,578 Gallons in 12 tanks
  • Water – 1,012 in Two Tanks
  • Hydraulic – 400 Gallons
  • Westfalia Fuel Centrifuge

Walk-in Refrigerator / Freezer

  • Technicold System


  • G.E. Adler Clothes Washer /Dryer


Fire System

  • FM 200 Automated Fire System
  • Portable Fire Extinguishers (19)
  • Smoke Detectors Throughout
  • Audible and Visual Alarms
  • Fire Hose
  • Fire Blanket
  • Fire Ax


  • Zodiac Life Rafts (2)
  • Emergency Propane Shut Off
  • Audible and Visual Alarms
  • Life Jackets and Flares
  • Extensive Medical Kits
  • Burns Treatment Kit
  • Spine Board, Splints

Note: Specifications and equipment availability subject to change without notice.

Support Grupo Cleofas – Donate Today!

Help Grupo Cleofas participate in the effort to study and preserve the Tres Marias archipelago!

Grupo Cleofas is a 501(c)(3) non-profit organization. Your donation is tax-deductible.