A usual construction of 3 bulkheads is used. The centre bulkhead is against the rear edge of the dagger board case to help structurally. The dagger case is mounted 100 mm forward of the current position used (2005), however the dagger board is vertical so the front hydrofoil is located in the same position as the prowler.

The bulkheads are pre-laminated and vacuum bagged on a prepared flat surface and shown in photo 7.

To fit the bulkheads large radius fillets and 50mm carbon tape is used. Photos 9, 10 and 11 show them being ftted.