Hydrographic Observations on board Research Vessels

Hydrographic observations are conducted in the seas adjacent to Japan and in the western North Pacific on board six vessels: the Ryofu Maru, the Keifu Maru (both operated by Climate and Marine Department at the Headquarters), the Kofu Maru (operated by Hakodate Marine Observatory), the Shumpu Maru (Kobe Marine Observatory), the Chofu Maru (Nagasaki Marine Observatory) and the Seifu Maru (Maizuru Marine Observatory).

Hydrographic Data

 Summary of Hydrographic Observations

Image of the Hydrographic Observation Lines on board Research Vessels

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Kofu Maru
Code Cruise Number
KO 6502, 6504, 6505, 6507, 6510, 6512, 6602, 6604, 6606, 6608
6609, 6611, 6702, 6705, 6707, 6710, 6711, 6802, 6804, 6806
6810, 6812, 6902, 6904, 6907, 6910, 7002, 7004, 7007, 7010
7012, 7102, 7104, 7107, 7110, 7111, 7202, 7204, 7207, 7208
7210, 7211, 7302, 7304, 7306, 7307, 7310, 7311, 7402, 7404
7405, 7407, 7408, 7411, 7502, 7504, 7507, 7508, 7510, 7511
7602, 7604, 7607, 7608, 7610, 7611, 7702, 7704, 7705, 7706
7707, 7709, 7711, 7802, 7804, 7807, 7808, 7810, 7902, 7904
7906, 7907, 7910, 8002, 8004, 8007, 8008, 8010, 8102, 8104
8106, 8108, 8110, 8202, 8204, 8205, 8207, 8209, 8302, 8304
8306, 8308, 8310, 8402, 8404, 8406, 8408, 8410, 8502, 8504
8507, 8508, 8510, 8602, 8604, 8606, 8608, 8610, 8702, 8704
8707, 8708, 8710, 8802, 8804, 8808, 8810, 8902, 8904, 8908
8910, 8911, 9002, 9004, 9005, 9006, 9010, 9102, 9104, 9107
9108, 9110, 9202, 9204, 9207, 9210

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Ryofu Maru
Code Cruise Number
RY 6501, 6504, 6507, 6602, 6604, 6609, 6611, 6701, 6705, 6706
6710, 6801, 6805, 6810, 6901, 6905, 6910, 7001, 7006, 7007
7009, 7010, 7101, 7110, 7111, 7201, 7204, 7206, 7210, 7301
7304, 7306, 7311, 7401, 7404, 7406, 7410, 7501, 7503, 7504
7506, 7510, 7601, 7604, 7606, 7610, 7701, 7704, 7706, 7710
7801, 7804, 7806, 7810, 7901, 7906, 7909, 7910, 8001, 8003
8004, 8006, 8009, 8010, 8011, 8101, 8104, 8106, 8109, 8110
8111, 8201, 8204, 8206, 8210, 8301, 8304, 8306, 8310, 8401
8404, 8406, 8410, 8411, 8501, 8504, 8506, 8510, 8601, 8604
8606, 8610, 8611, 8701, 8704, 8706, 8710, 8801, 8804, 8806
8810, 8901, 8904, 8906, 8910, 8911, 9001, 9003, 9004, 9006
9009, 9010, 9011, 9101, 9104, 9106, 9110, 9111, 9201, 9204
9206, 9210

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Keifu Maru
Code Cruise Number
KE 8802, 8804, 8805, 8901, 8902, 8904, 8906, 9005, 9006, 9008
9103, 9104, 9105, 9108, 9201, 9203, 9204, 9205, 9210

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Shumpu Maru
Code Cruise Number
SU 6502, 6504, 6507, 6510, 6602, 6605, 6607, 6610, 6702, 6704
6707, 6710, 6802, 6805, 6807, 6810, 6902, 6905, 6907, 6910
7002, 7005, 7007, 7010, 7104, 7107, 7108, 7110, 7111, 7202
7204, 7205, 7206, 7207, 7208, 7210, 7211, 7212
SH 7301, 7302, 7305, 7306, 7307, 7308, 7310, 7401, 7404, 7405
7407, 7409, 7411, 7502, 7505, 7507, 7508, 7509, 7602, 7605
7607, 7608, 7609, 7701, 7705, 7707, 7708, 7709, 7802, 7804
7807, 7808, 7809, 7902, 7904, 7907, 7908, 7909, 8002, 8004
8007, 8008, 8009, 8101, 8104, 8107, 8108, 8109, 8202, 8204
8207, 8208, 8209, 8302, 8304, 8307, 8308, 8309, 8402, 8404
8407, 8408, 8409, 8502, 8504, 8507, 8508, 8509, 8602, 8604
8607, 8609, 8702, 8704, 8707, 8709, 8802, 8804, 8807, 8809
8902, 8904, 8907, 8908, 8909, 9002, 9004, 9007, 9008, 9009
9102, 9104, 9107, 9108, 9109, 9202, 9204, 9207, 9209

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Chofu Maru
Code Cruise Number
TU 6501, 6504, 6507, 6509, 6510, 6601, 6603, 6604, 6606, 6607
6608, 6612, 6701, 6703, 6704, 6705, 6707, 6708, 6710, 6801
6802, 6804, 6806, 6807, 6810, 6901, 6903, 6904, 6905, 6906
6907, 6910, 7001, 7004, 7008, 7010, 7102, 7104, 7107, 7110
7201, 7203, 7204, 7206, 7207, 7210, 7211
CH 7301, 7303, 7304, 7307, 7310, 7312, 7401, 7405, 7407, 7410
7501, 7503, 7504, 7507, 7510, 7602, 7604, 7607, 7609, 7610
7701, 7704, 7707, 7710, 7801, 7804, 7807, 7809, 7901, 7904
7905, 7907, 7910, 8001, 8004, 8007, 8009, 8101, 8104, 8107
8110, 8201, 8204, 8207, 8209, 8301, 8304, 8307, 8309, 8401
8404, 8407, 8410, 8501, 8504, 8507, 8509, 8601, 8604, 8607
8610,
NC 8703, 8704, 8707, 8709, 8801, 8804, 8807, 8809, 8810, 8901
8904, 8907, 8910, 8911, 9001, 9004, 9007, 9010, 9101, 9104
9107, 9110, 9201, 9204, 9207, 9210

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Seifu Maru
Code Cruise Number
SI 6405, 6408, 6410, 6502, 6505, 6506, 6508, 6511, 6602, 6605
6607, 6608, 6702, 6706, 6707, 6708, 6710, 6802, 6806, 6807
6810, 6902, 6905, 6907, 6910, 7002, 7007, 7010, 7102, 7105
7107, 7110, 7202, 7205, 7207, 7210, 7211, 7302, 7303, 7305
7307, 7309, 7311, 7312, 7402, 7403, 7405, 7407, 7408, 7410
7411, 7502, 7503, 7505, 7506, 7507, 7508, 7509, 7510, 7602
7605, 7607, 7609, 7610, 7702, 7705, 7706, 7707, 7709, 7802
7805, 7806, 7807, 7808, 7810, 7902, 7905, 7907, 7909, 8002
8005, 8007, 8009, 8102, 8105, 8107, 8109, 8202, 8205, 8207
8209, 8302, 8305, 8307, 8309, 8402, 8405, 8407, 8409, 8502
8505, 8507, 8509, 8602, 8605, 8607, 8609, 8702, 8705, 8707
8709, 8801, 8805, 8807, 8809, 8902, 8905, 8907, 8909, 9002
9005, 9007, 9009, 9102, 9105, 9107, 9109, 9202, 9205, 9207

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