Design software: aerohydro (marine design and modeling software and services) aerologic (lofting, simulation and analysis software) aeromarine research (tunnel boat. Overall length the maximum length of a vessel’s hull measured parallel to the waterline.: 7.54′ (230 cm) 7.54′ (230 cm) overall width (beam) the width at the. Prices for boat covers, tops, enclosures, canvas repairs, parts, boat trailer repairs, upholstery, shrink wrap and more. all prices on this page are current for.