| Misson No. | Main Research Theme | Main Research 
          Area | Cruise Period (days) | Port of Call | Chief Scientist | 
        
        | MR04-K03 | Tropical Ocean Climate Studies | Western Tropical Pacific Ocean / Eastern Tropical Indian 
         Ocean | 6th June -6th July / 8th July-2nd Aug.2004(57 days) | Sekinehama Singapore
 Sekinehama
 | JAMSTEC Yoshifumi Kuroda
 | 
        
        | MR04-K04 | Temporal biogeochemical changes in the western North Pacific 
         and adjacent seas | The western North Pacific | 6th Aug. -29th Aug.2004(24 days) | Sekinehama Dutch Harbor
 | JAMSTEC Shuichi Watanabe
 | 
        
        | MR04-K05 | Studies on Arctic Ocean circulation linked to Arctic climate 
         system | Arctic Ocean (Beaufort Sea, Chukchi Sea, Canada Basin) | 31st Aug.-11th Oct. 2004(42 days) | Dutch Harbor Dutch Harbor
 | JAMSTEC Koji Shimada
 | 
        
        | MR04-K06 | Time-series observational study on the Material Cycle 
         in the North Pacific | The northwestern North Pacific | 13th Oct.- 8th Nov. 2004 (27 days) | Dutch Harbor Sekinehama
 | JAMSTEC Makio Honda
 | 
        
        | MR04-K07 | Temporal biogeochemical changes in the western North Pacific | The western North Pacific | 17th Nov -10th Dec. 2004 (24 days) | Sekinehama Chuuk
 | JAMSTEC Shuichi Watanabe
 | 
        
        | MR04-K08 | The Study of Air-Sea Interaction in the Tropics(Leg1) | Stationary observation will be conducted in the range 
         of 5°N-10°N,135°E-140°E | 12th Dec.2004 - 12th Jan. 2005 (32 days) | Chuuk Palau
 | JAMSTEC Kunio Yoneyama
 | 
        
        | Observational Studies in the Western Tropical Pacific 
         Ocean(Leg2) | 10°N-5°S,137°E-156°E | 14th Jan.-19th Feb. 2005 (37 days) | Palau Sekinehama
 | JAMSTEC Kentaro Ando
 | 
        
        | MR05-K01 | Time-series observational study on the Material Cycle 
         in the North Pacific | The northwestern North Pacific | 28th Feb.- 24th Mar. 2005(25 days) | Sekinehama Sekinehama
 | JAMSTEC Makio Honda
 |