It's most useful that quick design starts with popular hull shapes, i suggest adding simple modifications to model like barge, to add bilge, knuckles, curved rakes, to make the modeling easier for simple barges.
this will be very useful for offshore support engineers works with offshore contractors like my company NMDC Energy, this would allow engineers to model faster to check and assist offshore operations like installation or transportation.
Almost all simulation of offshore operations depends on modeling of barges and vessels, making modeling easier will accelerate the engineering work, calculation and reporting.