This report provides background information and issues for Congress on the LPD-17 Flight II amphibious ship program. The Navy's FY2020 budget submission defers the planned procurement of the second LPD-17 Flight II ship, LPD-31, by one year, to FY2021, and requests $247.1 million in advance procurement (AP) funding for the ship. This report also discusses LHA-9, a different kind of amphibious ship that the Navy wants to procure in FY2024. The Navy's proposed FY2020 budget does not request any procurement or AP funding for this ship. Issues for Congress include whether to procure LPD-31 in FY2020 or FY2021; whether to procure LPD-31 (if it is procured in FY2020) with full funding or incremental funding; the amount of procurement or AP funding to provide for LPD-31 and LHA-9 in FY2020; and more generally whether the Navy is placing too much, too little, or about the right amount of emphasis on amphibious ships in its FY2020 budget submission, particularly compared to other Navy shipbuilding programs. Congress's decisions on these issues could affect Navy capabilities and funding requirements and the shipbuilding industrial base. For an overview of the strategic and budgetary context in which the LPD-17 Flight II program and other Navy shipbuilding programs may be considered, see CRS Report RL32665, Navy Force Structure and Shipbuilding Plans: Background and Issues for Congress , by Ronald O'Rourke. Navy amphibious ships are operated by the Navy, with crews consisting of Navy personnel. The primary function of Navy amphibious ships is to lift (i.e., transport) embarked U.S. Marines and their equipment and supplies to distant operating areas, and enable Marines to conduct expeditionary operations ashore in those areas. Although amphibious ships are designed to support Marine landings against opposing military forces, they are also used for operations in permissive or benign situations where there are no opposing forces. Due to their large storage spaces and their ability to use helicopters and landing craft to transfer people, equipment, and supplies from ship to shore without need for port facilities, amphibious ships are potentially useful for a range of combat and noncombat operations. On any given day, some of the Navy's amphibious ships, like some of the Navy's other ships, are forward-deployed to various overseas operating areas. Forward-deployed U.S. Navy amphibious ships are often organized into three-ship formations called amphibious ready groups (ARGs). On average, two or perhaps three ARGs might be forward-deployed at any given time. Amphibious ships are also sometimes forward-deployed on an individual basis to lower-threat operating areas, particularly for conducting peacetime engagement activities with foreign countries or for responding to smaller-scale or noncombat contingencies. Navy amphibious ships can be divided into two main groups—the so-called "big-deck" amphibious assault ships, designated LHA and LHD, which look like medium-sized aircraft carriers, and the smaller (but still sizeable) amphibious ships designated LPD or LSD, which are sometimes called "small-deck" amphibious ships. The LHAs and LHDs have large flight decks and hangar decks for embarking and operating numerous helicopters and vertical or short takeoff and landing (V/STOL) fixed-wing aircraft, while the LSDs and LPDs have much smaller flight decks and hangar decks for embarking and operating smaller numbers of helicopters. The LHAs and LHDs, as bigger ships, in general can individually embark more Marines and equipment than the LSDs and LPDs. The Navy's 355-ship force-level goal, released in December 2016, calls for achieving and maintaining a 38-ship amphibious force that includes 12 LHA/LHD-type ships, 13 LPD-17 class ships, and 13 LSD/LPD-type ships (12+13+13). The goal for achieving and maintaining a force of 38 amphibious ships relates primarily to meeting wartime needs for amphibious lift. Navy and Marine Corps officials have testified that fully meeting U.S. regional combatant commander requests for day-to-day forward deployments of amphibious ships would require a force of 50 or more amphibious ships. The Navy's force of amphibious ships at the end of FY2018 included 32 ships, including 9 amphibious assault ships (1 LHA and 8 LHDs), 11 LPD-17 Flight I ships, and 12 LSD-41/49 class ships. The LSD-41/49 class ships, which are the ships to be replaced by LPD-17 Flight II ships, are discussed in the next section. The Navy's FY2020 30-year (FY2020-FY2049) shipbuilding plan projects that the Navy's force of amphibious ships will increase gradually to 38 ships by FY2026, remain at a total of 36 to 38 ships in FY2027 to FY2034, decline to 34 or 35 ships in FY2035-FY2038, increase to 36 or 37 ships in FY2039-FY2046, and remain at 35 ships in FY2047-FY2049. Over the entire 30-year period, the force is projected to include an average of about 35.8 ships, or about 94% of the required figure of 38 ships, through resulting amount of lift capability provided by the ships would not necessarily equate to about 94% of the amphibious lift goal, due to the mix of ships in service at any given moment and their individual lift capabilities. The Navy's 12 aging Whidbey Island/Harpers Ferry (LSD-41/49) class ships ( Figure 1 ) were procured between FY1981 and FY1993 and entered service between 1985 and 1998. The class includes 12 ships because they were built at a time when the Navy was planning a 36-ship (12+12+12) amphibious force. They have an expected service life of 40 years; the first ship will reach that age in 2025. The Navy's FY2020 30-year shipbuilding plan projects that the 12 ships will retire between FY2026 and FY2038. The Navy decided in 2014 that the LSD-41/49 replacement ships would be built to a variant of the design of the Navy's San Antonio (LPD-17) class amphibious ships. (A total of 13 LPD-17 class ships [LPDs 17 through 29] were procured between FY1996 and FY2017.) Reflecting that decision, the Navy announced on April 10, 2018, that the replacement ships would be known as the LPD-17 Flight II ships. By implication, the Navy's original LPD-17 design became the LPD-17 Flight I design. The first LPD-17 Flight II ship is designated LPD-30. Subsequent LPD-17 Flight II ships are to be designated LPD-31, LPD-32, and so on. Whether the LPD-17 Flight II ships constitute their own shipbuilding program or an extension of the original LPD-17 shipbuilding program might be a matter of perspective. As a matter of convenience, this CRS report refers to the Flight II shipbuilding effort as a separate program. Years from now, LPD-17 Flight I and Flight II ships might come to be known collectively as either the LPD-17 class, the LPD-17/30 class, or the LPD-17 and LPD-30 classes. Compared to the LPD-17 Flight I design, the LPD-17 Flight II design ( Figure 2 ) is somewhat less expensive to procure, and in some ways less capable—a reflection of how the Flight II design was developed to meet Navy and Marine Corps operational requirements while staying within a unit procurement cost target that had been established for the program. In many other respects, however, the LPD-17 Flight II design is similar in appearance and capabilities to the LPD-17 Flight I design. Of the 13 LPD-17 Flight I ships, the final two (LPDs 28 and 29) incorporate some design changes that make them transitional ships between the Flight I design and the Flight II design. Consistent with the Navy's 38-ship amphibious force-level goal, the Navy wants to procure a total of 13 LPD-17 Flight II ships. The first LPD-17 Flight II ship, LPD-30, was procured in FY2018. Under the Navy's FY2019 budget submission, the second LPD-17 Flight II ship, LPD-31, was to be procured in FY2020, and the remaining 11 were to be procured at a rate of one per year starting in FY2022. The Navy's FY2020 budget submission proposes deferring the procurement of LPD-31 to FY2021 and the procurement of the third ship (LPD-32) to FY2023, with the final 10 ships to be procured at a rate of one per year starting in FY2025. As shown in Table 1 , when compared to the Navy's FY2019 budget submission, the Navy's FY2020 budget submission reduces from four to two the total number of LPD-17 Flight II ships to be procured during the period FY2020-FY2024. Under the Navy's FY2020 budget submission, LPD-17 Flight II ships cost roughly $1.8 billion each to procure. Table 2 shows LPD-17 Flight II procurement and advance procurement (AP) funding for FY2020-FY2024 as presented in the Navy's FY2020 budget submission. The most recently procured LHA/LHD-type amphibious assault ship is LHA-8 ( Figure 3 ), which was procured in FY2017 and is scheduled under the Navy's FY2020 budget submission to be delivered in January 2024. The Navy wants to procure the next LHA/LHD-type ship, LHA-9, in FY2024. LHA/LHD-type ships are considerably larger and more expensive than LPDs. The Navy's FY2020 budget submission estimates LHA-9's procurement cost at $4,076.4 million (i.e., about $4.1 billion). Some in Congress and elsewhere are interested in the potential for accelerating the procurement of LHA-9 from FY2024 to an earlier year, such as FY2020 or FY2021, in part to achieve better production learning curve benefits in shifting from production of LHA-8 to LHA-9 and thereby reduce LHA-9's procurement cost in real (i.e., inflation-adjusted) terms. For example, the Senate Armed Services Committee's report ( S.Rept. 115-262 of June 5, 2018) on the John S. McCain National Defense Authorization Act for Fiscal Year 2019 (S. S. 2987 ) stated: The committee remains concerned with the Navy procurement profile for large deck amphibious assault ships, which includes a span of 7 years until the next large deck amphibious assault ship (LHA–9) is procured in 2024. The committee notes that efficiencies could be gained by reducing this span, which could enable a steadier workforce with an increased learning curve, material and equipment suppliers on more reliable and fixed delivery contracts, and a more effective continuous improvement schedule. The committee urges the Secretary of the Navy to accelerate procurement of LHA–9 to not later than 2021…. (Pages 82-83) As part of its action on the Navy's proposed FY2019 budget, Congress provided $350 million in unrequested AP funding for LHA-9, in part to encourage the Navy to accelerate the procurement of LHA-9 from FY2024 to an earlier fiscal year, such as FY2020 or FY2021. Under the Navy's FY2020 budget submission, the Navy continues to show LHA-9 as a ship planned for procurement in FY2024, and the Navy's proposed FY2020 budget does not request any additional procurement or AP funding for the ship. Consistent with past practice for procuring LHA/LHD-type amphibious ships, the Navy's FY2020 budget submission anticipates using two-year incremental funding (i.e., split funding) to procure LHA-9, with the bulk of the ship's procurement cost to be divided between FY2024 and FY2025. Table 3 shows FY2020-FY2024 funding for the ship under the Navy's FY2020 budget submission. Huntington Ingalls Industries/Ingalls Shipbuilding (HII/Ingalls) of Pascagoula, MS, is the Navy's current builder of both LPDs and LHA/LHD-type ships, although other U.S. shipyards could also build amphibious ships. The amphibious warship industrial base also includes many supplier firms in numerous U.S. states that provide materials and components for Navy amphibious ships. HII states that the supplier base for its LHA production line, for example, includes 457 companies in 39 states. FY2020 procurement and funding issues for Congress for FY2020 include the following: whether to procure LPD-31 in FY2020 or FY2021; whether to procure LPD-31 (if it is procured in FY2020) with full funding or incremental funding; the amount of procurement or AP funding to provide for LPD-31 and LHA-9 in FY2020; and more generally whether the Navy is placing too much, too little, or about the right amount of emphasis on amphibious ships in its FY2020 budget submission, particularly compared to other Navy shipbuilding programs. Regarding the first issue above, supporters of procuring LPD-31 in FY2020 could argue that it could put the Navy on a path to achieving the 38-ship amphibious ship force-level goal sooner than FY2026, permit the $350 million in AP funding that Congress provided for the program in FY2019 to be executed as intended, and leave more budgetary room in FY2021 for funding other Navy programs. Supporters of procuring LPD-31 in FY2021 could argue that FY2026 is an acceptable date for achieving the 38-ship amphibious ship force-level objective, particularly given the challenges the Navy faces for meeting some of its other force-level goals in coming years (such as those for attack submarines and aircraft carriers); that in a situation of finite Navy or Department of Defense (DOD) funding, procuring LPD-31 in FY2020 might require reductions in funding for other Navy or DOD programs, with an uncertain net result on Navy or DOD capabilities; and that Congress can make the FY2019 AP funding executable by passing legislation permitting the funding to be used on an LPD-17 Flight II ship procured in FY2021. Regarding the second issue above, supporters of procuring LPD-31 with full funding could argue that it would leave more budgetary room in FY2021 and perhaps one or more years beyond that for funding other Navy programs, and that Navy surface ships other than aircraft carriers and LHA/LHD-type amphibious assault ships have generally been procured with full funding rather than incremental funding. Supporters of funding LPD-31 with incremental funding could argue that doing so would reduce FY2020 funding needs for LPD-31, preserving more FY2020 funding for other Navy or DOD programs, and that there have been a few instances over the years in which Navy surface ships other than aircraft carriers and LHA/LHD-type amphibious assault ships have been procured with incremental funding. Regarding the third issue above, factors that Congress may consider include whether the Navy has properly scheduled and accurately estimated the work on these ships it is proposing to do in FY2020, and how the type and amount of work to be done on these ships in FY2020 would change if LPD-31 were procured in FY2020 instead of FY2021, and if procurement of LHA-9 were accelerated from FY2024 to an earlier fiscal year, such as FY2020 or FY2021. Regarding the fourth issue above, supporters of amphibious ships might argue that by deferring the procurement of LPD-31 to FY2021, reducing the number of LPD-17 Flight II ships to be procured in FY2020-FY2024, and not accelerating the procurement of LHA-9 from FY2024 to an earlier fiscal year, the Navy's FY2020 budget submission is placing a reduced emphasis on amphibious ships in its shipbuilding plans, particularly compared to other type of Navy ships, such as attack submarines, destroyers, and frigates, all of which experienced additions or accelerations in FY2020 or FY2021 under the Navy's FY2020 budget submission. Amphibious ships, they could argue, are as important as these other types of ships, and are in high demand by U.S. regional combatant commanders. Other observers, while acknowledging the value of amphibious ships, might argue that within a finite Navy budget, the Navy needs to make difficult choices about what type of ships to procure; that attack submarines, destroyers, and frigates are critical for countering China's improving naval capabilities and for performing other missions; and that the Navy currently has substantial shortfalls in attack submarines, large surface combatants (such as destroyers), and small surface combatants (such as frigates) relative to its force-level goals for those types of ships. Another potential issue for Congress is technical risk in the LPD-17 Flight II and LHA programs. A May 2019 Government Accountability Office (GAO) report—the 2019 edition of GAO's annual report surveying DOD major acquisition programs—states the following about the LPD-17 Flight II program: Current Status The Navy planned to accelerate purchase of LPD 30—the first fully configured Flight II ship—after Congress appropriated $1.8 billion above the fiscal year 2018 budget request, according to program officials. The Navy reported that it awarded contracts in August 2018 for LPD 30 long lead time materials and in March 2019 for lead ship construction. The Navy based the Flight II design on Flight I, with modifications to reduce costs and meet new requirements. According to program officials, roughly 200 design changes will distinguish the two flights including replacing the composite mast with a steel stick. Officials stated that the design would not rely on any new technologies. However, the Navy plans to install a new radar, the Enterprise Air Surveillance Radar, which is still in development. The Navy expects live radar system testing through November 2019, with a complete radar prototype in February 2020. Although program officials consider these activities to be low risk, the Navy will make its decision to begin ship construction by December 2019 without incorporating lessons learned from radar testing into the design. Starting construction before stabilizing the design could require the Navy to absorb costly design changes and rework during ship construction. The Navy initially pursued a limited competition for LX(R), but now has a non-competitive acquisition strategy for LPD 17 Flight II. The Navy plans to award sole-source contracts to Huntington Ingalls—the only shipbuilder of Flight I ships—for Flight II construction. Further, the program did not request a separate independent cost estimate for Flight II prior to awarding the LPD 30 detail design and construction contract. At the same time, the Navy identified no plans to establish a cost baseline specific to Flight II. Without this baseline, the Navy would report full LPD 17 program costs—rather than Flight II specific costs—constraining visibility into Flight II. Program Office Comments We provided a draft of this assessment to the program office for review and comment. The program office provided technical comments, which we incorporated as appropriate The program office stated that LPD Flight II is included under the existing LPD 17 acquisition program baseline, and that no other viable contractor responded to a public notice regarding the Navy's plan to award Huntington Ingalls the LPD 30 construction contract. The May 2019 GAO report stated the following about the LHA program: Current Status In June 2017, the Navy exercised a contract option for detail design and construction of the LHA 8. The LHA 8 incorporates significant design changes from earlier ships in the LHA 6 class, but Navy officials were unable to quantify the changes. The Navy started construction in October 2018 and LHA 8 is scheduled to be delivered in January 2024. The LHA 8 program office has not identified any critical technologies. However, the ship is relying on technology that is currently being developed by another Navy program, the Enterprise Air Surveillance Radar (EASR), with delivery expected in August 2021. EASR, intended to provide self-defense and situational awareness capabilities, is derived from the pre-existing Air and Missile Defense Radar program, but will be a different size and will rotate. LHA 8 program officials have identified the radar as the program's highest development risk. If the radar is not delivered on schedule, Navy officials report that this could lead to out-of-sequence design and delayed installation and testing. Officials responsible for developing the radar, however, stated that the radar is approaching maturity and is on schedule to be delivered to the shipbuilder when needed. The Navy began construction with about 61 percent of the LHA 8 product model completed—an approach inconsistent with shipbuilding best practices. These best practices call for 100 percent completion of 3D product modeling prior to construction start to minimize the likelihood of costly re-work and out of sequence work that can drive schedule delays. The Navy, however, estimates that the LHA 8 shipbuilder will not complete 100 percent of the ship's 3D product model until June 2019, almost 8 months after the start of construction. Program Office Comments We provided a draft of this assessment to the program office for review and comment. The program office provided technical comments, which we incorporated where appropriate. The program office stated that the Navy understands all design changes incorporated on the LHA 8, such as reintroducing the well deck and incorporating EASR. According to the program office, the Navy does not begin construction on any section of the LHA 8 ship before completing that respective section's design. Table 4 summarizes congressional action on the Navy's FY2020 funding request for the LPD-17 Flight II and LHA-9 programs.

Summary: The Navy wants to procure a total of 13 LPD-17 Flight II amphibious ships. LPD-17 Flight II ships cost roughly $1.8 billion each to procure. The first LPD-17 Flight II ship, LPD-30, was procured in FY2018. As part of its action on the Navy's proposed FY2019 budget, Congress provided $350 million in unrequested advance procurement (AP) funding for a second LPD-17 Flight II ship, LPD-31, to be procured in FY2020. This was consistent with the Navy's FY2019 budget submission, under which LPD-31 was planned for procurement in FY2020 and the remainder of its procurement cost was to be requested in FY2020. The Navy's FY2020 budget submission, however, proposes deferring the procurement of LPD-31 by one year, to FY2021, and the Navy's proposed FY2020 budget, rather than requesting the remainder of LPD-31's procurement cost, instead requests $247.1 million in AP funding for the ship. Navy officials state that if no LPD-17 Flight II ship is procured in FY2020, the $350 million in FY2019 AP funding that Congress provided for the LPD-17 program would become unexecutable, because that funding was provided specifically for use in building an LPD-17 Flight II ship procured in FY2020, not an LPD-17 Flight II ship procured in FY2021. The $350 million in FY2019 AP funding can be made executable by procuring LPD-31 in FY2020 or by passing legislation permitting the FY2019 AP funding to be used for an LPD-17 Flight II ship procured in FY2021. One alternative for procuring LPD-31 in FY2020 would be to do so with full funding (i.e., with the remainder of the ship's procurement cost provided in FY2020). Another alternative would be to pass legislation giving the Navy the authority to procure LPD-31 in FY2020 using incremental funding. Navy officials state that under the latter alternative, the amount of procurement funding needed for LPD-31 in FY2020 would be, at a minimum, roughly $200 million, and not more than the requested amount of $247.1 million. As part of its action on the Navy's proposed FY2019 budget, Congress also provided $350 million in unrequested AP funding for a different kind of amphibious ship—an amphibious assault ship called LHA-9. This ship is considerably larger and more expensive than an LPD-17 Flight II ship. The Navy's FY2020 budget submission estimates LHA-9's procurement cost at $4,076.4 million (i.e., about $4.1 billion). Under the Navy's FY2019 budget submission, LHA-9 was planned for procurement in FY2024. The $350 million in FY2019 AP funding that Congress provided was intended to encourage the Navy to accelerate the procurement of LHA-9 from FY2024 to an earlier fiscal year, such as FY2020 or FY2021. Under the Navy's FY2020 budget submission, the Navy continues to show LHA-9 as a ship planned for procurement in FY2024, and the Navy's proposed FY2020 budget does not request any additional procurement or AP funding for the ship. Issues for Congress include whether to procure LPD-31 in FY2020 or FY2021; whether to procure LPD-31 (if it is procured in FY2020) with full funding or incremental funding; the amount of procurement or AP funding to provide for LPD-31 and LHA-9 in FY2020; more generally whether the Navy is placing too much, too little, or about the right amount of emphasis on amphibious ships in its FY2020 budget submission, particularly compared to other Navy shipbuilding programs; and technical risk in the LPD-17 Flight II and LHA programs.