The Knossos version of WC Saga, Version 0.9.62 (the bug may exist in other versions, I can't attest to that) has a bug in messages.tbl that results in the InvercagillControl death message (The hull is rupturing! AAAAHH!) being played for inappropriate deaths, most notably Kilrathi deaths.
Took me a while to figure out the bug, but the problem seems to be that messages.tbl is missing the required persona declaration (as quoted below) for InvercagillControl, which seemingly leaves the InvercagillControl death message unparented because its persona doesn't exist. This presumably interacts with the way message substitution works in such a way that it ends up getting played for deaths that it shouldn't.
$Persona: InvercagillControl
$Type: large
;+Terran
The Terran line is probably not needed, as the ; is presumably commenting it out, but that's the way all the other entries appear. With this added the message no longer plays improperly.
The presentation of this bug may be dependent on FSO version, potentially due to changes in or the addition of message substitution and/or automatic persona assignment. But the bug exists within the files regardless of this fact.