Long Lance torpedoes may have finished damaged Japanese ships

Did Type 93 Long Lance torpedoes sink more Japanese ships than the commonly cited figure?

Possibly, because some were used to scuttle damaged Japanese ships that could not be recovered, but no firm total is given.

No firm count is given for Japanese ships lost to their own Long Lance torpedoes. The total could be substantial because the weapons were also used to finish ships that were already damaged and could not be brought home. Those deliberate scuttlings differ from accidental friendly-fire hits. A single tally may combine both kinds of loss unless its criteria are stated clearly.