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Vessel Data and Contact Information for the
Mary Sear (USNS)

Last Updated - 5/10/2005
Main Activities
Capacities & Workspaces
Range, Speed, Endurance
DP Equipment
CTD Specs
Coring Specs
Underwater Vehicles
Diving Capabilities
Engineering Design
Navigation & Communications
Acoustics & Profiling
Winches, Gantries & Cranes
Country: USA

NODC Code:

    Call Sign: Unknown
Owner: U. S. Navy
Operator: Military Sealift Command Atlantic
Address: Public Affairs Office
Military Sealift Command, 914 Charles Morris Ct. SE
Washington Navy Yard, DC, 20398-5540 USA
Telephone: +1(202)-685-5055
Year Built: 2001
Ship URL: Link to Ship Home Page

Ship Schedule URL:


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Main Dimensions

  Length OA: 100  m
  Breadth: 17.6  m
  Freeboard to working deck: Unknown
  Max. draft: 5.8  m

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Main Vessel Activity

  Main Activity: Oceanographic and hydrographic survey
  Operating Area: Worldwide
  Navy Grids Supported:

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Capacities and Working Spaces

  Gross tonnage: Unknown
  Dry cargo holds: Unknown
  Fuel: Unknown
  Wet Labs Area: Unknown
  Dry Lab Area: Unknown
  Fresh Water
 Storage Capacity:
  Fresh Water Generator Capacity: Unknown
  Scientific Clean Water Generation: Unknown
  Free Working Deck Area: Unknown
  Space for container lab: Unknown
  Radioactive Isotope Work Areas: Unknown

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Range, Speed and Endurance

  Range: 1200  nautical miles
  Cruising Speed: 12  kts.
  Max. Speed: 16  kts.
  Endurance: 29  days

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  Officers: Unknown
  Other crew: 25
  Scientists: 30
  Air Conditioned:

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Data Processing Equipment:

  Computers: Unknown
  Printing/Plotting: Unknown

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CTD Specifications:

  CTD Aboard: yes
  CTD Type: Falmouth ICTD up to 7,000 meters
  CTD Tow able: Unknown
  CTD Oxygen Sensing: Unknown
  CTD Transmissivity: Unknown
  CTD Fluormeter: Unknown
  CTD Rosette: Unknown

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Coring Specifications:

  Coring Capabilities Aboard: Unknown
  Grab Sampler: Unknown
  Box Corer: Unknown
  Gravity Corer: Unknown
  Piston Corer: Unknown
  Multi Corer: Unknown

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Underwater Vehicle Capabilities:

  Underwater Vehicle Support: Unknown
  ROVs: Unknown
  AUVs: Unknown
  Submersibles: Unknown

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Diving Support:

  Diving Capabilities: Unknown

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Engineering Design Particulars


Ice Breaking Ability:


Hull Materials:

Steel hull, steel superstructure
  Dynamic Positioning Ability: Unknown
  Engines: Main engine(s): number:  4   make:  Diesel-electric, EMD/Baylor diesel
Power (BHP) each engine:  11,425
Propeller Diameter:  Unknown
  m Max. RPM:   Unknown
Total power auxiliary diesels:  8000   HP
  Electrical Systems:  


 Voltages: Unknown
     kVA: Unknown
    Phases: Unknown



Stabilized System:  Unknown  VAC  Unknown  AMPs   Unknown  Hz



  Unknown   Volts with  Unknown  Volts Max


Fixed Equipment

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Navigation and Communication:

  Navigational Equipment: Unknown
  Communications Equipment: Unknown
  Satellite Communications Equipment: Unknown
  GPS: Unknown

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Acoustics and Profiling:

  Echosounders: (ODEC BATHY-2000) is configured as a 12/33 kHz
  Sonar Type: Acoustic Release System: (EG&G 8011A)
  Sea Surface Mapping System: Unknown
  Side Scanning: Unknown
  Multibeam: (SIMRAD Inc. EM121A) is a 12 kHz, 121 beam
  Acoustic Doppler Current Profiler: Current Profiles (RD Instruments VM-0150) is a 150 kHz system dedepths to 380 meterspths to 380 meters
  Silent Ship Operations: Unknown

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  Winches: Unknown  
    Steel Wire Length: Unknown  safe working load:  Unknown
    Conducting Cable Length:  Unknown , safe working load:  Unknown
    Trawl winch length:  Unknown , safe working load:  Unknown
    Other Winches:
      Length:  Unknown , safe working load:  Unknown
  Gantry: Position: Unknown

Clearance above deck:  Unknown , and outboard extension:  Unknown


Safe working load at maximum reach:  Unknown

  Crane: Position: Unknown

Clearance above deck:  Unknown  and outboard extension:  Unknown


Safe working load at maximum reach:  Unknown

  Other:   Unknown

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Vessel Construction and Maintenance Supervision

  Construction Supervised by: Halter Marine, Moss Point
  Classification Society: Pathfinder Class
  Others, Specify: T-AGS 65
OCEANIC - Ships Schedules & Information Pages
University of Delaware, College of Earth, Ocean, and Environment
Lewes, Delaware  19958
Phone:  (302) 645-4225