Step 6: Mark bow and stern and up
You generally want the better looking edge to be at the top.
Mark the bow and stern with arrows so you can keep track which is up and which is front. You will be marking deck beam positions on the top edge of the boards and rib mortise positions on the bottom edge of the boards.
Once you work on the boat with a bow facing a certain direction, always keep it facing the same way so you don't get confused over which end is which.