There is an opening in the rearmost compartment of each seatback to serve as a locker for loose items.
It will be very useful, making a good use of space and looking nice too.
The inside of this locker will be visible so it has to be properly finished, unlike the rest of the seatback interior which will be sealed up for forever!
There is still quite a lot to do inside this locker to install blocking for the gallows support pole and mooring cleats, so for now I just gave both sides a good sanding to get a flat, matt surface. Like this.
That's it for now.