Last update : December 1, 1998
Note :
Naval vessels
| Type | Ship code | Old ship code | Ship's name | Displacement tons | Build - Retire | Other information |
|---|---|---|---|---|---|---|
| Minelayer | _AM | AM / -- | ITSUKUSHIMA | 1970 | Dec. 1929 - Oct. 1944 | |
| Special Service Ship | _OT | OT / -- | OTOMARI | 2330 | Nov. 1921 - ???. 1949 | Icebreaker |
| Survey Vessel | _KH | KH / -- | KOMAHASHI | 1230 | 1931* - Jul. 1945 | * : The year which was appointed as the survey vessel (Commissioned in Jan. 1914) |
| _KK | KK / -- | KATSURIKI | 1540 | 1935* - Sep. 1944 | * : The year which was appointed as the survey vessel (Commissioned in Jan. 1917) | |
| _MN | MN / -- | MANSYU | 3510 | Feb. 1916* - Dec. 1930 | * : The date which was appointed as the survey vessel | |
| _MT | MT / -- | MATSUE | 2550 | Nov. 1905* - 1925 | * : The date which was appointed as the survey vessel | |
| _UY | UY / -- | KOSYU | 2080 | Apr. 1917* - Apr. 1939 | * : The date which was appointed as the survey vessel | |
| _TV | TV / -- | TSUKUSHI | 1400 | Dec. 1941 - Nov. 1943 | ||
| _YA | YA / -- | YAMATO | 1330 | Apr. 1902* - 1934 | * : The date which was appointed as the survey vessel | |
| _YO | YO / -- | YODO | 1320 | 1928* - 1940 | * : The year of the first sounding |
Oceanographic Research Vessels and Chartered Ships
| Type | Ship code | Old ship code | Ship's name | Gross tons | Build - Retired | Other information |
|---|---|---|---|---|---|---|
| Oceanographic Research Vessel | _K1 | K1 / -- | KAIYO NO.1 | 200 | Oct. 1939 - Oct. 1944 | It is sometimes expressed with "KAIYO MARU NO.1". |
| _K2 | K2 / -- | KAIYO NO.2 | 200 | Jan. 1940 - Oct. 1944 | It is sometimes expressed with "KAIYO MARU NO.2". | |
| _K3 | K3 / -- | KAIYO NO.3 | 200 | Jun. 1942 - Oct. 1944 | It is sometimes expressed with "KAIYO MARU NO.3". | |
| _K4 | K4 / -- | KAIYO NO.4 | 200 | Jul. 1942 - Mar. 1964 | It is sometimes expressed with "KAIYO MARU NO.4". May 1948 : admitted by the Maritime Safety Agency as "KAIYO NO.4 (HG01)" |
|
| _K5 | K5 / -- | KAIYO NO.5 | 200 | Feb. 1943 - Sep. 1952 | It is sometimes expressed with "KAIYO MARU NO.5". May 1948 : admitted by the Maritime Safety Agency as "KAIYO NO.5 (HG02)" |
|
| _K6 | K6 / -- | KAIYO NO.6 | 200 | Mar. 1943 - Oct. 1944 | It is sometimes expressed with "KAIYO MARU NO.6". |
| Type | Ship code | Old ship code | Ship's name | Gross tons | Observation term | Other information |
|---|---|---|---|---|---|---|
| Chartered ship | _Y6 | Y6 / -- | KYO MARU NO.6 | 340 | Jun. 1939 - Jul. 1939 | A whaler of the Kyokuyo Hogei Co. Ltd. |
| _Y7 | Y7 / -- | KYO MARU NO.7 | 340 | Jun. 1939 - Jul. 1939 | A whaler of the Kyokuyo Hogei Co. Ltd. | |
| _Y8 | Y8 / -- | KYO MARU NO.8 | 340 | Jul. 1939 - Aug. 1940 | A whaler of the Kyokuyo Hogei Co. Ltd. | |
| _YX | YX / -- | KYO MARU NO.10 | 340 | Jul. 1939 - Aug. 1939 | A whaler of the Kyokuyo Hogei Co. Ltd. | |
| _S1 | S1 / -- | SHONAN MARU NO.1 | 350 | Jul. 1940 - Aug. 1940 | A whaler of the Nippon Suisan Co. Ltd. | |
| _S3 | S3 / -- | SHONAN MARU NO.3 | 350 | May 1941 - Jul. 1941 | A whaler of the Nippon Suisan Co. Ltd. | |
| _S6 | S6 / -- | SHONAN MARU NO.6 | 355 | Jul. 1940 - Jun. 1941 | A whaler of the Nippon Suisan Co. Ltd. | |
| _S7 | S7 / -- | SHONAN MARU NO.7 | 355 | Jun. 1941 - Jul. 1941 | A whaler of the Nippon Suisan Co. Ltd. | |
| _S8 | S8 / -- | SHONAN MARU NO.8 | 355 | Jun. 1941 - Jul. 1941 | A whaler of the Nippon Suisan Co. Ltd. | |
| _T1 | T1 / -- | TAKUNAN MARU NO.1 | 343 | Jul. 1939 - Sep. 1939 | A whaler of the Nippon Suisan Co. Ltd. | |
| _T2 | T2 / -- | TAKUNAN MARU NO.2 | 343 | Jul. 1939 - Aug. 1939 | A whaler of the Nippon Suisan Co. Ltd. | |
| _T3 | T3 / -- | TAKUNAN MARU NO.3 | 343 | Jul. 1939 - Aug. 1940 | A whaler of the Nippon Suisan Co. Ltd. | |
| _T5 | T5 / -- | TAKUNAN MARU NO.5 | 343 | Jul. 1940 - Aug. 1940 | A whaler of the Nippon Suisan Co. Ltd. | |
| _T8 | T8 / -- | TAKUNAN MARU NO.8 | 343 | Jul. 1939 - Sep. 1939 | A whaler of the Nippon Suisan Co. Ltd. | |
| _TX | TX / -- | TAKUNAN MARU NO.10 | 343 | Jul. 1939 - Aug. 1939 | A whaler of the Nippon Suisan Co. Ltd. | |
| _TM | TM / -- | TAMA MARU | 264 | Aug. 1938 - Aug. 1940 | A whaler of the Taiyo Hogei Co. Ltd. | |
| _A2 | A2 / -- | TAMA MARU NO.2 | 264 | Aug. 1938 - Jun. 1941 | A whaler of the Taiyo Hogei Co. Ltd. | |
| _A3 | A3 / -- | TAMA MARU NO.3 | 257 | Aug. 1938 - Aug. 1939 | A whaler of the Taiyo Hogei Co. Ltd. | |
| _A5 | A5 / -- | TAMA MARU NO.5 | 257 | Aug. 1938 - Aug. 1939 | A whaler of the Taiyo Hogei Co. Ltd. | |
| _A6 | A6 / -- | TAMA MARU NO.6 | 275 | Aug. 1938 - Aug. 1940 | A whaler of the Taiyo Hogei Co. Ltd. | |
| _A7 | A7 / -- | TAMA MARU NO.7 | 275 | Jul. 1939 - Aug. 1939 | A whaler of the Taiyo Hogei Co. Ltd. | |
| _TP | TP / -- | TSUMEKI MARU | 20 | ? - ? | A fishing boat | |
| _TS | TS / -- | TOSHI MARU | 293 | Jul. 1940 - Aug. 1940 | A whaler of the Taiyo Hogei Co. Ltd. | |
| _O2 | O2 / -- | TOSHI MARU NO.2 | 293 | Jul. 1939 - Jul. 1941 | A whaler of the Taiyo Hogei Co. Ltd. | |
| _O5 | O5 / -- | TOSHI MARU NO.5 | 298 | Jun. 1941 - Jul. 1941 | A whaler of the Taiyo Hogei Co. Ltd. | |
| _O7 | O7 / -- | TOSHI MARU NO.7 | 297 | Jul. 1939 - Jul. 1941 | A whaler of the Taiyo Hogei Co. Ltd. | |
| _HD | HD / -- | HOYO MARU | 36 | ? - ? | A fishing boat | |
| _MG | MG / -- | MYOGA MARU | ? | Sep. 1938 - Oct. 1938 | ||
| _YM | YM / -- | TOYAMA MARU | 914 | Apr. 1941 - Dec. 1943 | ||
| _YK | YK / -- | YOKO MARU | 1050 | Apr. 1941 - May 1942 |