Did Japanese coastal torpedo launchers achieve notable results?

Did Japanese coastal torpedo launchers, such as those planned for Midway, achieve anything significant?

No notable success is identified, although the system is considered sound and its opportunities to prove itself are doubted.

Japanese coastal torpedo launchers are not credited with a notable success in this answer. The qualification is that they apparently had little opportunity to engage useful targets. The proposed Midway installation is treated as a plausible coastal weapon system. The assessment retains confidence in the concept despite the limited operational results it can identify.