We have developed a new hollow structure that consists of laterally isolated air chambers. Each chamber is separated from the next by a thin wooden wall that is semi-permeable to air and impermeable to water.
A common issue with traditional hollow wooden surfboards is that flooding can occur throughout the entire board. This new structure prevents this. If in an unlikely event, the strong outer shell is pierced, only a single compartment will flood that can then be quickly dried and easily repaired.
Having lateral supports or trusses is also advantageous as it increases the flexural modulus of the structure compared to those with longitudinal stringers.