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Vessel Data and Contact Information for the
John N. Cobb

Last Updated - 1/21/2005
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: WMVC
Owner: National Oceanic and Atmospheric Administration
Operator: Office of Marine and Aviation Operations (OMAO)
Address: Marine Operations Center: Pacific
1801 Fairview Ave E
Seattle, WA 98102-3767
Telephone: 907-586-7507
Year Built: 1950
Ship URL: Link to Ship Home Page

Ship Schedule URL:

Ship Schedule via its Home Page

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Main Dimensions

  Length OA: 28.3  m
  Breadth: 7.9  m
  Freeboard to working deck: Unknown
  Max. draft: 3.4  m

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Main Vessel Activity

  Main Activity: Fisheries Research, Marine mammal surveys
  Operating Area: Southeast Alaska and U.S. Pacific water
  Navy Grids Supported: NP5, 6, and 9

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Capacities and Working Spaces

  Gross tonnage: 185  GRT
  Dry cargo holds: Unknown
  Fuel: 31  m3
  Wet Labs Area: Unknown
  Dry Lab Area: Unknown
  Fresh Water
 Storage Capacity:
23  m3
  Fresh Water Generator Capacity: 2.84  m3/day
  Scientific Clean Water Generation: Desalinator, Reverse Osmosis
  Free Working Deck Area: Unknown
  Space for container lab: Unknown
  Radioactive Isotope Work Areas: Unknown

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Range, Speed and Endurance

  Range: 2850  nautical miles
  Cruising Speed: 10  kts.
  Max. Speed: Unknown
  Endurance: 13  days

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  Officers: 2
  Other crew: 5
  Scientists: 4
  Air Conditioned: Unknown

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Data Processing Equipment:

  Computers: IBM Compatible (1) connected to GPS
  Printing/Plotting: Unknown

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CTD Specifications:

  CTD Aboard: Unknown
  CTD Type: Unknown
  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:

  Dynamic Positioning Ability: Unknown
  Engines: Main engine(s): number:  1   make:  Diesel (Direct Reversing) Fairbanks Morse
Power (BHP) each engine:  Unknown

Propeller Diameter:  1.52   m Max. RPM:   Unknown

Total power auxiliary diesels:  Unknown
  Electrical Systems:  


 Voltages: 110/220/240V
     kVA: Unknown
    Phases: 1/3


60/60  Hz

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: X-Band Radar Loran, Gyrocompass, Autopilot
  Communications Equipment: VHF/FM Transceivers (2), HF Marine Band Transceiver (2), INMARSAT mini-M Radio Transceiver, IMARSAT Standard c, Wavetalk SATcom Tranceiver, Emergency Postion Indicator Radio Beacons, Search and Rescue transponder, AIS, E-mail
  Satellite Communications Equipment: Unknown
  GPS: GPS Receiver

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Acoustics and Profiling:

  Echosounders: Shallow Water Echo Sounder, Color Sounder
  Sonar Type: Fish Finder, Forward Looking Sonar, Net Sonde
  Sea Surface Mapping System: Unknown
  Side Scanning: Unknown
  Multibeam: Unknown
  Acoustic Doppler Current Profiler: Unknown
  Silent Ship Operations: Unknown

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  Winches: 1  
    Steel Wire Length: 4877  m,  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:   Trawl Winch, Net reel Winch

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Vessel Construction and Maintenance Supervision

  Construction Supervised by: Unknown
  Classification Society: Unknown
  Others, Specify: Unknown
OCEANIC - Ships Schedules & Information Pages
University of Delaware, College of Earth, Ocean, and Environment
Lewes, Delaware  19958
Phone:  (302) 645-4225