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Vessel Data and Contact Information for the
Seifu Maru

Last Updated - 11/4/2003
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: JIVB
Owner: Ministry of Land, Infrastructure and Transport
Operator: Maizuru Marine Observatory
Contact: Director, Marine Division, JMA
Address: Maiduru Marine Observatory
901, Shimofukui
Maiduru, 624-0946 Japan
Telephone: 0773 764111
Fax: 753162
Year Built: 1993
Ship URL: Link to Ship Home Page

Ship Schedule URL:


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Main Dimensions

  Length OA: 56  m
  Breadth: 9.8  m
  Freeboard to working deck: 0.6  m
  Max. draft: 3.72  m

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Main Vessel Activity

  Main Activity: Oceanography and Meteorological Observation
  Operating Area: The Western North Pacific
  Navy Grids Supported:

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Capacities and Working Spaces

  Gross tonnage: 484  GRT
  Dry cargo holds: Unknown
  Fuel: 151.26  m3
  Wet Labs Area: 34  m2
  Dry Lab Area: 15  m2
  Fresh Water
 Storage Capacity:
130.62  m3
  Fresh Water Generator Capacity: 5  m3/day
  Scientific Clean Water Generation: Millipore
  Free Working Deck Area: Unknown
  Space for container lab: Unknown
  Radioactive Isotope Work Areas: Unknown

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Range, Speed and Endurance

  Range: 5000  nautical miles
  Cruising Speed: 11.5  kts.
  Max. Speed: 14.8  kts.
  Endurance: 10  days

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  Officers: 9
  Other crew: 13
  Scientists: 10
  Air Conditioned: Unknown

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Data Processing Equipment:

  Computers: Yes
  Printing/Plotting: Yes

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CTD Specifications:

  CTD Aboard: Yes
  CTD Type: Neil Brown Instruments, Mark IIIB
  CTD Tow able: No
  CTD Oxygen Sensing: No
  CTD Transmissivity: No
  CTD Fluormeter: No
  CTD Rosette: General Oceanic 1015 (12 Bottles)

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Coring Specifications:

  Coring Capabilities Aboard: No
  Grab Sampler: No
  Box Corer: No
  Gravity Corer: No
  Piston Corer: No
  Multi Corer: No

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Underwater Vehicle Capabilities:

  Underwater Vehicle Support: No
  ROVs: No
  AUVs: No
  Submersibles: No

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Diving Support:

  Diving Capabilities: No

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Engineering Design Particulars


Ice Breaking Ability:


Hull Materials:

  Dynamic Positioning Ability: Unknown
  Engines: Main engine(s): number:  1   make:  4-stroke Diesel engine
Power (BHP) each engine:  1800ps at 290r.p.m
Propeller Diameter:  2.3   m Max. RPM:   290
Total power auxiliary diesels:  600   HP
  Electrical Systems:  


 Voltages: 0/450V
     kVA: 750
    Phases: 3


60  Hz

Stabilized System:   VAC  Unknown  AMPs   Unknown  Hz



  24V   Volts with  Unknown  Volts Max


Fixed Equipment

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Navigation and Communication:

  Navigational Equipment: Radar, DGPS, Gyro, Dop Log.
  Communications Equipment: Fax, SatCom
  Satellite Communications Equipment: Inmarsat C, B
  GPS: Furuno DGPS

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Acoustics and Profiling:

  Echosounders: 12kHz
  Sonar Type: Unknown
  Sea Surface Mapping System: No
  Side Scanning: No
  Multibeam: none
  Acoustic Doppler Current Profiler: Furuno, 130kHz
  Silent Ship Operations: Yes

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  Winches: 3  
    Steel Wire Length: 5000  m,  safe working load:  Unknown
    Conducting Cable Length:  6000  m , safe working load:  2.8  tons
    Trawl winch length:  Unknown , safe working load:  Unknown
    Other Winches:
      Length:  2000  m , safe working load:  0.9  tons
  Gantry: Position: Stern

Clearance above deck:  4  m , and outboard extension:  2  m


Safe working load at maximum reach:  3  tons

  Crane: Position: Stern

Clearance above deck:  14  m  and outboard extension:  5  m


Safe working load at maximum reach:  1  tons

  Other:   Unknown

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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