GTSPP Data Product Centre| Year & Month (yyyymm) | Call Sign (SOT-ID) | Ship name | Number of observations |
|---|---|---|---|
| 201001 | JPBN | KEIFU MARU | 34 |
| 201006 | JPBN | KEIFU MARU | 57 |
| 201102 | JPBN | KEIFU MARU | 20 |
| 201106 | JGQH | RYOFU MARU III | 96 |
| 201206 | JGQH | RYOFU MARU III | 15 |
| 201206 | JPBN | KEIFU MARU | 39 |
| 201302 | JPBN | KEIFU MARU | 15 |
| 201305 | JPBN | KEIFU MARU | 16 |
| 201307 | JPBN | KEIFU MARU | 41 |
| 201402 | JPBN | KEIFU MARU | 20 |
| 201405 | JPBN | KEIFU MARU | 13 |
| 201407 | JPBN | KEIFU MARU | 48 |
| 201506 | JGQH | RYOFU MARU III | 16 |
| 201507 | JPBN | KEIFU MARU | 48 |
| 201608 | JPBN | KEIFU MARU | 48 |
| 201707 | JGQH | RYOFU MARU III | 20 |
| 201802 | JPBN | KEIFU MARU | 12 |
| 201807 | JGQH | RYOFU MARU III | 12 |
| 201808 | JGQH | RYOFU MARU III | 40 |
| 201809 | JGQH | RYOFU MARU III | 30 |
| 201902 | JPBN | KEIFU MARU | 8 |
| 201903 | JPBN | KEIFU MARU | 10 |
| 201905 | JGQH | RYOFU MARU III | 17 |
| 201908 | JGQH | RYOFU MARU III | 45 |
| 202002 | JPBN | KEIFU MARU | 13 |
| 202008 | JGQH | RYOFU MARU III | 26 |
| 202102 | JPBN | KEIFU MARU | 19 |
| 202106 | JPBN | KEIFU MARU | 26 |
| 202204 | JGQH | RYOFU MARU III | 15 |
| 202406 | JPBN | KEIFU MARU | 18 |
| 202501 | JPBN | KEIFU MARU | 37 |