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Vessel Data and Contact Information for the
Koyo Maru

Last Updated -
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: Japan

NODC Code:

    Call Sign: Unknown
Operator: Shimonoseki University of Fisheries (SUF)
Contact: Captain Omura
Address: Shimonoseki University of Fisheries (SUF)
2-7-1 Nagat Honmachi / P.O. Box.3, Yoshimi, Yamaguchi Pref.
Shimonoseki 759-65 Japan
Telephone: 0832 86-5111
Fax: 0832-86-2292
Year Built: 1978
Ship URL: Link to Ship Home Page

Ship Schedule URL:


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Main Dimensions

  Length OA: 81.4  m
  Breadth: 13  m
  Freeboard to working deck: 2.7  m
  Max. draft: 6.03  m

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Main Vessel Activity

  Main Activity: Oceanography Fisheries
  Operating Area:
  Navy Grids Supported:

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Capacities and Working Spaces

  Gross tonnage: 1990  GRT
  Dry cargo holds: Unknown
  Fuel: 531  m3
  Wet Labs Area: 17  m2
  Dry Lab Area: 17  m2
  Fresh Water
 Storage Capacity:
  Fresh Water Generator Capacity: 10  m3/day
  Scientific Clean Water Generation: Unknown
  Free Working Deck Area: Unknown
  Space for container lab: 3 x 6  m
  Radioactive Isotope Work Areas: Unknown

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Range, Speed and Endurance

  Range: 1200  nautical miles
  Cruising Speed: 14  kts.
  Max. Speed: 15.7  kts.
  Endurance: 45  days

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  Officers: 16
  Other crew: 27
  Scientists: 0
  Air Conditioned:  Yes

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Data Processing Equipment:

  Computers: NEC PC-9800
  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
Power (BHP) each engine:  3800 at 230 rpm
Propeller Diameter:  3.2   m Max. RPM:   Unknown

Total power auxiliary diesels:  1790   HP
  Electrical Systems:  


 Voltages: 450/0V
     kVA: 1490
    Phases: 3


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: Radar Loran Decca SatNav Gyro EMLog
  Communications Equipment: Fax SatCom
  Satellite Communications Equipment: Unknown
  GPS: Unknown

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Acoustics and Profiling:

  Echosounders: Unknown
  Sonar Type: Unknown
  Sea Surface Mapping System: Unknown
  Side Scanning: Unknown
  Multibeam: Unknown
  Acoustic Doppler Current Profiler: Unknown
  Silent Ship Operations: Unknown

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  Winches: 3  
    Steel Wire Length: 6000  m,  safe working load:  17  tons
    Conducting Cable Length:  5000  m , safe working load:  Unknown
    Trawl winch length:  Unknown , safe working load:  Unknown
    Other Winches:
      Length:  2000  m , safe working load:  Unknown
  Gantry: Position: Midships

Clearance above deck:  3  m , and outboard extension:  1  m


Safe working load at maximum reach:  4  tons

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