[PDGearhead]

Damage to the propeller and/or shaft would not allow water to enter the vessel. There is a shaft log with packing around the shaft inside of the hull that prevents watering from leaking in.

Since the seal on the shaft is inside of the hull ahead of the hole in the hull where the shaft comes through, cutting the shaft would not cause a leak.

The vessel could be inoperable, but it would not sink the ship. If the propeller is damaged, and they attempt to leave port, there would be some serious vibration (assuming a blade is missing or bent) but it still would cause a leak.

[Drill Thrawl]

It would cause a leak if they ignored the vibration long enough. And judging the intelligence of these "people" I don't think that is out of the question.

Shame we won't get to find out either way.

[OldNewYork]

Thanks, I thought there would be something like that - it would seem to me to be a serious design flaw if not. Also, if the team had access to the propeller, they’d have had access to other ways to sink the ship, if that’s what they wanted to do.