Nuclear energy has the potential to become one of the main alternatives to achieve sustainable marine shipping and reduce its greenhouse gas emissions. This study defines a power generation arrangement and evaluates design speed for nuclear powered vessels. Higher design speeds show promising economic results. This includes higher revenue and trade while maintaining a relatively low operational expenditures when compared with conventional powered ships. This study is carried out for a large container vessel and a large bulk carrier to support the implementation of nuclear energy technology. This study reviews reactors designed to a 25- to 75-year service life, using a fully electric power generation and propulsion layout.@en