I just re-watched both parts of Year of Hell yesterday, and I had forgotten how much damage Voyager takes. Are the Krenim's chronitonic torpedoes not particularly strong, other than the fact that they can cut right through regular shielding? Otherwise, I don't see how Voyager could have been as intact as it was towards the end of the episode. I mean, it took much less for an old Klingon Bird of Prey to cause a warp core breach in Generations after their disruptors tore through the Enterprise's shields. Voyager still was able to function after numerous attacks, and even was able to go to warp after it was heavily damaged.