The Navy does not yet have a handle on how many autonomous underwater vehicles it needs over the next decade, but a forthcoming study on unmanned systems could help delineate the requirement, according to a recent report to lawmakers. In a Feb. 15 report to Congress signed by Navy Secretary Ray Mabus, the service states that "specific AUV inventory requirements in 2025 are not accurately known in 2016." It adds an analysis on capability gaps and the potential for such...