Use American metals and materials, build in American shipyards, help stop the giant unseen pollution of bunker fuel burning cargo carriers. The technology is already existent now used in huge sailing yachts such as Jeff Bezos just finished building. Giant opportunity for youth training and service with the greatest number of sciences in any human pursuit. Five thousand years of continuous development was abandoned over the last one hundred years. Time to bring it back with a whole new light.
Challenge youth to learn Aerodynamics, Hydrodynamics, Metallurgy, Oceanography, Navigation, Astronomy, Physics, Computational Fluid Dynamics (CFD), Structural Engineering, Geography, Cartography, Meteorology, and common sense.
This is a perfect way to build new construction infrastructure and to vitalize parts of that which are in decay. We would lead the world as a nation in providing clean air and water solutions to marine transportation and trade.
We are already far behind but could quickly catch up if the will is there.