If I simply keep trying to advance through the game without stopping every so often to level grind, what are the odds that my characters will become strong enough to continue just by means of anything the game throws at me? I've been strong enough to fail to stop the construction of the [[Warship]] but that was because I spent a real long time improving my HP, weapon skills and spell levels.
Oh yeah, I'm playing the NES version. I already established that no effort need go into level grinding in the GBA version, it all just goes up on its own :P