The forward portion of the superstructure has sloping walls with round ports. The superstructure is topped by a wood deck. This was made in the same way as the main deck. The game illustrations show an open passage through the superstructure. I salvaged the deck house walls from a 1/96 Revell Cutty Sark model. I used these for the bulkheads facing the passageway. They came ready molded with doors and paneling and added a nice period touch. Note that I beveled the edges of the wood deck to the angle of the sides.