Navy LPD-17 Flight II and LHA Amphibious Ship Programs: Background and Issues for Congress [Updated June 8, 2020] [open pdf - 1MB]
From the Summary: "This report discusses two types of amphibious ships being procured for the Navy: LPD-17 Flight II class amphibious ships and LHA-type amphibious assault ships. Both types are built by Huntington Ingalls Industries/Ingalls Shipbuilding (HII/Ingalls) of Pascagoula, MS. The first LPD-17 Flight II class ship, LPD-30, was procured in FY2018; the Navy's FY2021 budget submission estimates its cost at $1,819.6 million (i.e., about $1.8 billion). LHA-type amphibious assault ships are procured once every few years. LHA-8 was procured in FY2017; the Navy's FY2021 budget submission estimates its cost at $3,832.0 million (i.e., about $3.8 billion)."
CRS Report for Congress, R43543
Congressional Research Service: https://crsreports.congress.gov/