Last update : August 26, 2009
Note :
| Institution | Ship code | Old ship code | Ship's name | Gross tons | Build - Retire | Other information |
|---|---|---|---|---|---|---|
| Japan Marine Science and Technology Center (JAMSTEC) | 7JDU | -- / -- | NATSUSHIMA | 1553 | Oct. 1981 - A.S. | |
| JCOY | -- / -- | YOKOSUKA | 4439 | Apr. 1990 - A.S. | ||
| JRPG | -- / XK | KAIYO | 2893 | May 1985 - A.S. | ||
| JNSR | -- / -- | MIRAI | 8241 | Sep. 1997 (Reconstruction) - A.S. | Old "MUTSU" (Atomic ship, launched in Jun. 1969) | |
| JRZH | -- / -- | KAIREI | 4628 | Mar. 1997 - A.S. | ||
| Metal Mining Agency of Japan (MMAJ) | JBHT | -- / GH | HAKUREI MARU | 1830 | Mar. 1974 - A.S. | |
| JKYS | -- / -- | HAKUREI MARU NO.2 | 2126 | May 1985 - A.S. | ||
| NPO VOS Nippon | VOSAUST | -- / -- | Japan-Australia Vos vessel | 89,000 | - A.S. | Voluntary observing ship, shipname nondisclosure |
| VOSASIA | -- / -- | Asian seas Vos vessel | 9,500 | - A.S. | Voluntary observing ship, shipname nondisclosure | |
| Others | _AX | -- / AX | AXBT observation | ---- | All AXBT observation | |
| _XX | -- / XX | Unknown ship | ---- |