Updated 12/10/2020: In December 2016, the Navy released a force-structure goal that callsfor achieving and maintaining a fleet of 355 ships of certain types and numbers. The 355-shipgoal was made U.S. policy by Section 1025 of the FY2018 National Defense AuthorizationAct (H.R. 2810/P.L. 115- 91 of December 12, 2017). The Navy and the Department of Defense(DOD) have been working since 2019 to develop a successor for the 355-ship force-level goal.The new goal is expected to introduce a new, more distributed fleet architecture featuring asmaller proportion of larger ships, a larger proportion of smaller ships, and a new third tier oflarge unmanned vehicles (UVs). On December 9, 2020, the Trump Administration released a document that can beviewed as its vision for future Navy force structure and/or a draft version of the FY202230-year Navy shipbuilding plan. The document presents a Navy force-level goal that callsfor achieving by 2045 a Navy with a more distributed fleet architecture, 382 to 446 mannedships, and 143 to 242 large UVs. The Administration that takes office on January 20, 2021,is required by law to release the FY2022 30-year Navy shipbuilding plan in connection withDOD's proposed FY2022 budget, which will be submitted to Congress in 2021. In preparingthe FY2022 30-year shipbuilding plan, the Administration that takes office on January 20,2021, may choose to adopt, revise, or set aside the document that was released on December9, 2020. The Navy states that its original FY2021 budget submission requests the procurement ofeight new ships, but this figure includes LPD-31, an LPD-17 Flight II amphibious ship thatCongress procured (i.e., authorized and appropriated procurement funding for) in FY2020.Excluding this ship, the Navy's original FY2021 budget submission requests the procurementof seven new ships rather than eight. In late November 2020, the Trump Administrationreportedly decided to request the procurement of a second Virginia-class attack submarinein FY2021. CRS as of December 10, 2020, had not received any documentation from theAdministration detailing the exact changes to the Virginia-class program funding linesthat would result from this reported change. Pending the delivery of that information fromthe administration, this CRS report continues to use the Navy's original FY2021 budgetsubmission in its tables and narrative discussions.

Ship Construction is a comprehensive text for students of naval architecture, ship building and construction, and for professional Naval Architects and Marine Engineers. Covers the complete ship construction process including the development of ship types, materials and strengths of ships, welding and cutting, shipyard practice, ship structure and outfitting, All the latest developments in technology and shipyard methods, including a new chapter on computer-aided design and manufacture, Essential for students and professionals, particularly those working in shipyards, supervising ship construction, conversion and maintenance. Book jacket.