2–B body
Hull modifications
High-density foam core is used selectively in the composite sandwich in areas where high compression strength is needed. Stringers added at the aft of hulls support mounting inboard electric motors.
Materials
Aluminum 5052
Easily formed or bent without breaking, with good surface quality, often used for marine shell plating.
Composite Sandwich
Closed-cell foam core between inner and outer fiberglass laminate.
Fiberglass
Lightweight, strong, and moldable.
Stainless Steel
Higher corrosion resistance and strength than aluminum, but much heavier.