Modern outboards changed the arithmetic. Without shafts, gearboxes or a machinery space amidships, designers reclaim the volume for cabins, stowage and beach club space, and the hull can run finer aft. Maintenance becomes a matter of scheduled service rather than confined space engineering, and repowering is a week rather than a season. For a yacht carrying eleven guests, that efficiency shows up everywhere, in layout, in draft and in running cost.