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Vessel Data and Contact Information for the
Seward Johnson

Last Updated - 1/26/2005
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: WST9756
Owner: Harbor Branch Oceanographic Institution
Operator: Harbor Branch Oceanographic Institution (HBOI)
Contact: Tim Askew
Address: Harbor Branch Oceanographic Institution
5600 U.S. 1 North
Ft. Pierce, FL 34946
Telephone: 772-465-2400 x262
Fax: 772-465-2116
Year Built: 1984
Ship URL: Link to Ship Home Page

Ship Schedule URL:

Ship Schedule via its Home Page

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Main Dimensions

  Length OA: 62.18  m
  Breadth: 10.97  m
  Freeboard to working deck: Unknown
  Max. draft: 3.66  m

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Main Vessel Activity

  Main Activity:
  Operating Area:
  Navy Grids Supported:

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Capacities and Working Spaces

  Gross tonnage: 285  GRT
  Dry cargo holds: Unknown
  Fuel: 227.1  m3
  Wet Labs Area: 26.76  m2
  Dry Lab Area: 43.48  m2
  Fresh Water
 Storage Capacity:
57  m3
  Fresh Water Generator Capacity: 10.9  m3/day
  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: 6000  nautical miles
  Cruising Speed: 12  kts.
  Max. Speed: 13  kts.
  Endurance: Unknown

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  Officers: Unknown
  Other crew: 11
  Scientists: 29
  Air Conditioned:  Yes

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Data Processing Equipment:

  Computers: Unknown
  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: yes
  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:  2   make:  Caterpillar 3512 TI
Power (BHP) each engine:  850 HP at 1200rpm ea.
Propeller Diameter:  Unknown
  m Max. RPM:   Unknown
Total power auxiliary diesels:  Unknown
  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: Raytheon pathfinder ST A.R.P.A. S-band (10cm) Radar and Furuno 1221 X-band (3cm) Radar
  Communications Equipment: Unknown
  Satellite Communications Equipment: Inmarsat A/C
  GPS: Magnavox MX 200 (differential) GPS sets

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Acoustics and Profiling:

  Echosounders: Simrad EQ50 video echosounder, 38/50 kHz
  Sonar Type: Unknown
  Sea Surface Mapping System: Unknown
  Side Scanning: Unknown
  Multibeam: Unknown
  Acoustic Doppler Current Profiler: RDI 150/600 kHz
  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:  11.58  m


Safe working load at maximum reach:  10  tons

  Other:   Various trawl, hydrographic, conductor, CTD and constant tension tow winches available

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Vessel Construction and Maintenance Supervision

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