SteelTrap,
I agree that the large war ships should been tougher to sink; they were, after all,
built for endurance and devastating offensive power and not for speed.
The escort ships, on the other hand, were built for speed and not as well armored.
In vanilla SH3 as-well-as GWX I tend to tear through the lighter class escorts with
one shot, I have even taken one out by being too close to the surface during a DC run
where he took keel damage from my tower.
(Didn't do me much good ether, but down he went, just the same.)
I imagine that all those nice sealed compartments don't amount to much if the
ammo and fuel stored there starts to go POP. I'm not running in there with a fire hose.
"
I say, would you mind popping down to the munitions store and dousing that inferno? There's a good chap."

No thanks.
Ichi...