By George Galdorisi*
At no time since the end of World War II have so many nations fielded blue water navies that have roamed the globe. Navies from Australia, China, Japan, Russia, the United Kingdom, and the United States have regional and worldwide commitments. Whether it is reinforcing or challenging rules-based order at sea, showing resolve to reassure allies and deter rivals, or exercising with other navies, these fleet also recognize that they must be prepared for high-end war at sea. Comparative naval advantage has returned as a critical unit of measure in great power competition. (The Center for International Maritime Safety.)
