This study forms Phase II of a continuing effort to identify future world trends and their implications for the U.S. Navy. Phase I, completed in 1971, described major world futures without delimitation. This portion, Phase II, attempts to isolate largely American trend lines, based upon the literature as a form of delimitation and definition. Phase II was undertaken by a selected group of students at the Naval War College at the direction of the Chief of Naval Operations. The purpose of Phase II of The Long Range-Future of the Navy Study is to determine not only what principal trends are generally known and recognized as leading to the future, but also to identify what avenues of inquiry need further study and, specifically, what future research is required to clarify areas of doubt and areas of promise leading to a series of specific naval recommendations which might be eventually presented to the Chief of Naval Operations for his information and consideration. This further delimitation in futures would be the goal of a Phase III study.