Mission by M-3H Launch Vehicle
| Launch Date | Mission |
|---|---|
| 1978.9.16 | Earth's Magnetosphere Observation JIKIKEN |
| 1978.2.4 | Aurora Observation KYOKKO |
| 1977.2.19 | Test Satellite TANSEI-3 |

An extension of the first stage motor casing of the M-3C increased propellant to achieve a greater payload capability. The M-3H belongs to the same generation as the M-3C. It could send a 300 kg satellite into low earth orbit.
Mission by M-3H Launch Vehicle
| Launch Date | Mission |
|---|---|
| 1978.9.16 | Earth's Magnetosphere Observation JIKIKEN |
| 1978.2.4 | Aurora Observation KYOKKO |
| 1977.2.19 | Test Satellite TANSEI-3 |