; purchase or lease of small boats for contingent and emergent requirements (at a unit cost of not more than $700,000) and repairs and service-life replacements, not to exceed a total of $31,000,000; purchase, lease, or improvements of boats necessary for overseas deployments and activities; payments pursuant to section 156 of Public Law 97–377 ( 42 U.S.C. 402 note; 96 Stat. 1920); and recreation and welfare; $7,620,209,000, of which $340,000,000 shall be for defense-related activities; and of which $24,500,000 shall be derived from the Oil Spill Liability Trust Fund to carry out the purposes of section 1012(a)(5) of the Oil Pollution Act of 1990 ( 33 U.S.C. 2712(a)(5) ): Provided , That not to exceed $23,000 shall be for official reception and representation expenses. Procurement, construction, and improvements (including transfer of funds) For necessary expenses of the Coast Guard for procurement, construction, and improvements, including aids to navigation, shore facilities (including facilities at Department of Defense installations used by the Coast Guard), procurements to buy vessels and aircraft, including equipment related thereto, $1,429,750,000, to remain available until September 30, 2023, of which $20,000,000 shall be derived from the Oil Spill Liability Trust Fund to carry out the purposes of section 1012(a)(5) of the Oil Pollution Act of 1990 ( 33 U.S.C. 2712(a)(5) ), and in addition $95,000,000 for the procurement of Long Lead Time Materials for a twelfth National Security Cutter, which shall be derived by transfer from unobligated balances from prior-year appropriations available under the heading Science and Technology Directorate — Research and Development . Research and development For necessary expenses of the Coast Guard for research and development; and for maintenance, rehabilitation, lease, and operation of facilities and equipment