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Maritime Operations in Disconnected, Intermittent, and Low-Bandwidth Environments

Abstract : The navies of the United States and its allies and coalition partners have come to be increasingly reliant on the availability of stable, high-bandwidth, ship-to-shore satellite communications (SATCOM) to deliver network and application services. Even before the recent recognition that satellite dependence presents tactical and operational vulnerabilities, work within the five eyes AUSCANNZUKUS alliance and Multinational Maritime Information Systems Interoperability (M2I2) coalition communities have progressed architectures designed for Disconnected, Intermittent, and Low-Bandwidth (DIL) environments. Motivations for these efforts have derived from concerns about satellites being jammed or even shot down during hostilities, and also from concerns about the cost and availability of satellites world-wide. In this paper, we report on solution sets developed for maritime operations in DIL environments, focusing on five areas: enhancing line-of-sight communications paths, improving multi-bearer routing, implementing a distributed security architecture, developing applications for distributed operations, and developing a dynamic distributed database to support operations in DIL environments.