Manufacture of boats, namely, manufacture of marine vessels, houseboats, pleasure boats, patio boats, pontoon boats, deck boats, and recreational watercraft; manufacture of boats to the order and specification of others, namely, manufacture of marine vessels, houseboats, pleasure boats, patio boats, pontoon boats, deck boats, and recreational watercraft to the order and specification of others; manufacture of structural parts for boats, namely, manufacturer of structural parts for marine vessels, houseboats, pleasure boats, patio boats, pontoon boats, deck boats, and recreational watercraft; manufacture of boat hulls, namely, manufacture of hulls for marine vessels, houseboats, pleasure boats, patio boats, pontoon boats, deck boats, and recreational watercraft; custom manufacture of boats, namely, custom manufacture of marine vessels, houseboats, pleasure boats, patio boats, pontoon boats, deck boats, and recreational watercraft; boat building to the order and specification of others, namely, building marine vessels, houseboats, pleasure boats, patio boats, pontoon boats, deck boats, and recreational watercraft to the order and specification of others