I guess its just the whole 'never give up thing.' These aren't my first ships by any means, in fact I think I'm around 20 or so completed. Building isn't easy though, and if I tried a house or a village I might take a lot longer.
If you inclided the I-401 I know you are a blue steel fan right away. Also, the Takao class ships were heavy cruisers, not battlecruisers. I am currently working on a Yamato class battleship. Great job.