User blog comment:Marcboy99/Death to all navies/@comment-12271231-20140601222921/@comment-11135771-20140601230856

Giant submarine? Unfortunately the game seems to artificially inflate the damage taken by submarines of any size. I once made a sub that was something like 1.5km long with ~800k toughness, and even normal 46cm guns could still do noticeable amounts of damage to it.