What is your mod list there smm? The SH4 completely ignores attempts to tame the Mark 10, which means we rely upon the player to keep them on impact pistol...
The Mark 10 did not have as high of a chance for duds as the Mark 14 did, by a long shot. There were some, usually "wandering" on their track, or sometimes a circle runner, sometimes no detonation upon impact, but generally rather reliable torpedoes, if a bit anemic in the explosion strength. One thing to watch for with the S-Boat, is that since the Mark 14 torpedo is listed first in the Weapons upc file, if you empty your stores while on patrol, when you come back in to dock and End Patrol, the game will load you up with Mark 14 devices. Easy enough to change, if you remember to do so, or prior to docking, go ahead and do the re-arm choice, and load-up on torpedoes, then dock. Just one of those SH4 kind of things.
