The deck.

Before the deck plywood is glued on, the hull is filled with polystyrene foam board. This to ensure that the ice boat does not sink in case ending up in the water.

 I used a saw, wire brush and vacuum cleaner for shaping the polystyrene. So far this has been the only unpleasant job of the build. Even if using the vacuum cleaner the polystyrene balls get stuck every where.

Also the small box in front of the seat is filled with polystyrene.

Sometimes you have to improvise a bit...

At this point I drilled the two 8 mm holes for fastening the front runner plank.

I use a car exhaust gas pipe clamp as fastening point for the blocks that will be used for trimming the sail.

Same procedure as for gluing the bottom plywood.

After the glue has dried the hull is taken out side to plane of the excessive plywood and given a finishing touch with sand paper.