– US Naval War College Review – This article examines the Ukrainian governments attempts to rebuild the Ukrainian navy and argues that, while Ukraine faces political, conceptual, and financial challenges in reviving its maritime power, it has made some modest progress toward building a “mosquito fleet.” This fleet has been bolstered by the addition of some small, new ships and the increasing professionalization of Ukraine’s naval personnel, in particular its marines. This progress suggests that Ukraine can go in a radically different direction as it redevelops its navy: toward coastal defense.