How to build a Bigger Map in Build a Boat (PLOT EXPANSION)

In this video I will show you how to build a huge plot in Build a Boat.
The platform is roughly 600x600 studs long, which is made out of a 3x3 grid.

Special Thanks to ‪@phntvldacer1‬ for inspiring this design.

All of the music used in the video (In order):
LAKEY INSPIRED - Blue Boi
LAKEY INSPIRED - Chill Day
LAKEY INSPIRED - Better Days
glue70 - Reach Your Destination

Timestamps:
0:00 Intro
0:16 Required items
0:22 Aligning your placement
0:45 Building
3:41 Duplicating the piston extenders
6:50 Finishing the build
7:30 Final touches
8:00 Outro