| 1. Report of the Cruise in 2006 Fiscal Year |
6 |
| 1.1 General Account |
6 |
| 1.2 Particulars |
10 |
| 1.3 Directories of Crews |
12 |
| 2. Report on the 19th Cruise |
13 |
| 2.1 General Account and Cruise Itineraries |
13 |
| 2.2 Track Chart |
16 |
| 2.3 Abstract Log |
17 |
| 2.4 Directories of Scientists and Cadets on Board |
18 |
| 2.5 Survey Report |
20 |
| 2.5.1 Note on the ship position’s practice |
20 |
| 2.5.2 Report on jig fishing practice in the Japan Sea |
27 |
| 2.5.3 Note on assessment of steering on the ship practice |
41 |
| 2.6 Research Report |
48 |
| 2.6.1 Note on the methane gas area research 2006 |
48 |
| 3. Report on the 20th Cruise |
53 |
| 3.1 General Account and Cruise Itineraries |
53 |
| 3.2 Track Chart |
55 |
| 3.3 Abstract Log |
55 |
| 3.4 Directories of Scientist and Cadet on Board |
56 |
| 3.5 Survey Report |
58 |
| 3.5.1 Report on catch of trawl fishing practice in the Eastern China Sea at October 2006 |
58 |
| 3.5.2 Report on the limit of dredging anchor of Umitaka-MARU |
69 |
| 4. Report on the 21st Cruise |
78 |
| 4.1 General Account and Cruise Itineraries |
78 |
| 4.2 Track Chart |
81 |
| 4.3 Abstract Log |
81 |
| 4.4 Directories of Scientist and Cadet on Board |
83 |
| 4.5 Survey Report |
85 |
| 4.5.1 Report of port’s guidance at 21st cruise |
85 |
| 4.5.1.1 Port of Sydney AUSTRALIA |
85 |
| 4.5.1.2 Report of Noumea NEW CALEDONIA |
89 |
| 4.5.1.3 Port of Apia SAMOA |
94 |
| 4.5.1.4 Report of Pohnpei MICRONECIA |
105 |
| 4.5.2 Report of tuna long-line practice at the center of West Pacific Ocean at winter season 2006 |
109 |
| 4.5.3 Report of Training for Rescue Man over board at actual Sea |
129 |
| 4.5.4 Note on the method of maneuvering test practice |
144 |
| 4.5.5 Note on gyro compass error compare with Ring laser gyro from Pohepei to Tokyo |
156 |
| 4.5.6 Note on relation of sunlight and ship board temperature |
159 |