The data below is included for archival purposes. 

The most current data that we have is available via our new searchable
database of ships at:
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Chofu Maru

Ship Name: Chofu Maru (Japan)                          US NODC Code: 49TU           Ministry of Transport

Contact: Director
Operator: Nagasaki Marine Observatory
         11-51,Minamiyamate-Machi
         Nagasaki  850  Japan
  Phone: 00958 266141
    Fax: 233080
  Cable:
  Email:

Length (M):  56.00       Range (n. mi.):      5000        Crew:           13
Beam (M):     9.80       Endurance (days):      10        Officers:       10
Draft (M):    3.61       Cruise speed (kt):   12.0        Scientists:     10
Gross Tons:    480       Max. speed (kt):     15.2        Air Cond.:      no
Power (HP):   1800       Aux. Power (HP):      600

Main vessel activity
     Oceanography Meteorological Observation
     Year built: 87
     Ocean area where vessel operates: Pacific, Northwest
Capacities and working spaces
     Dry cargo holds:                     0m3
     Fuel:                              151m3
     Fresh water:                       113m3
     Wet laboratories (total area):      36m2
     Dry laboratories (total area):      16m2
     Fresh water generator capacity:      2m3
     Freeboard to working deck:         0.7m
     Free working deck area:              0m2
     Space for container laboratory:      0m x     0m
Design Particulars
     Hull materials: Steel
Energy sources
     Main engine(s): number:  1 make: Diesel    model:
     Power (BHP) each main engine:   1800 at    290rpm
     Diameter and max. rpm propeller:      2.300m     290rpm
     Total power auxiliary diesels:    600HP
Electrical systems
     AC Voltage:      0/   440V, total    750kVA,      3phase,     60Hz
     AC Voltage:      0/     0V, total      0kVA,      0phase,      0Hz
     DC Voltage:      0V, total      0V
     Stabilized system for scientific equipment:      0VAC      0AMP      0Hz
Fixed equipment
     Navigation and communication
     Nav. equip: Radar Loran SatNav Gyro DopLog
     Comms: Fax
     Comm sat:
     GPS:
Acoustic
     Echosounders for scientific research:     12kHz    200kHz
     Sonar:
     Provisions for silent ship operation:
Oceanographic
     Oceanographic winches:   number:  3
       Steel wire length:         2000m, safe working load:      0tons
       Conducting cable length:   6000m, safe working load:      1tons
       Trawl winch length:           0m, safe working load:      0tons
       Other, specify: Steel Wire
                   length:        8000m, safe working load:      1tons
     Gantry
       Position: Stern
       Clearance above deck:   4m and outboard extension:   2m
       Safe working load at max. reach:     3tons
     Crane
       Position: Stern
       Clearance above deck:   9m and outboard extension:   9m
       Safe working load at max. reach:     1tons
     Other winches for instruments or sampling:

Electronic data processing equipment permanently available on board
     Computer:
Vessel construction and maintenance supervision
     Construction supervised by:
       Classification Society:
       Others, specify:
Published vessel data
     Magazine: