Navy John Lewis (TAO-205) Class Oiler Shipbuilding Program: Background and Issues for Congress [Updated October 19, 2021] [open pdf - 2MB]
From the Summary: "The Navy procured its first John Lewis (TAO-205) class oiler in FY2016, and a total of six have been procured through FY2021, including the fifth and sixth in FY2020. The first six TAO-205s are being procured under a block buy contract that was authorized by Section 127 of the FY2016 National Defense Authorization Act (S. 1356/P.L. 114-92 of November 25, 2015), and are being built by General Dynamics/National Steel and Shipbuilding Company (GD/NASSCO) of San Diego, CA. The Navy wants to procure a total of 20 TAO-205s. The Navy's proposed FY2022 budget requests $668.2 million for the procurement of a seventh TAO-205 class ship, and an additional $76.0 million in advance procurement (AP) funding for the procurement of another TAO-205 in a future fiscal year."
CRS Report for Congress, R43546
Congressional Research Service: https://crsreports.congress.gov/