Model-based Systems Engineering approach to US Navy towing and salvage fleet recapitalization

摘要

The United States Navy owns four salvage ships and four towing ships that will reach the endof their 40-year life expectancy in 2019. The program manager for these vessels has a set ofdesirable performance requirements for a new ship class, T-ARS(X), which combines thecapabilities from both the salvage and towing ship classes. The need to develop arecapitalization strategy based on either designing a new ship class based on these desirablerequirements or purchasing commercial capabilities based on the salvage and towingcommunity’s needs is paramount.The Department of Defense (DoD) has shifted defense planning from the specific servicerequirements generating system (RGS) acquisition to the Joint Capabilities Integration andDevelopment System (JCIDS) approach that focuses on requirements generation based oncustomer need. This paper explores how to use systems architecture development principles inthe context of model-based systems engineering (MBSE) to incorporate the capabilities neededfor towing and salvage recapitalization into a cohesive framework for developing the T-ARS(X)requirement specification. The CORE design tool is used to implement the MBSE architectingprocess using the Naval Architecture Elements Reference Guide (NAERG) and standardizedoperational tasks to create Department of Defense Architecture Framework (DoDAF) v1.5products from system models. The requirements generated from the architecture model arecompared with the current, combined towing and salvage-capable commercial platforms foranalysis. The methodology presented provides the towing and salvage community with the basisto perform a capabilities-based analysis of alternatives (AoA) for the T-ARS(X) recapitalization.