; or (ii) represent general safety, navigational safety, security, firefighting, habitability, or maintainability deficiencies that would prevent the crew of a ship from living on board safely or operating and maintaining ship systems. (B) Similar deficiencies (commonly referred to as double-starred deficiencies ) in ships constructed, converted, or modernized with a separate fitting-out period assigned away from the building site. . 106. Limitation on duration of homeporting of certain vessels in foreign locations (a) Limitation (1) In general Chapter 633 of title 10, United States Code, is amended by inserting after section 7310 the following new section: 7310a. Homeporting of certain vessels in overseas locations: limitation on duration (a) In general A vessel specified in subsection (b) that is listed in the Naval Vessel Register may not be homeported in a location other than in the United States or Guam for a period of more than 10 consecutive years. (b) Specified vessels The vessels specified in this subsection are the following: (1) Aircraft carrier. (2) Amphibious ship. (3) Cruiser. (4) Destroyer. (5) Frigate. . (2) Clerical amendment The table of sections at the beginning of chapter 633 of such title is amended by inserting after the item relating to section 7310 the following new item: 7310a. Homeporting of certain vessels in overseas locations: limitation on duration. . (b) Effective date The amendments made by this section shall take effect on October 1, 2020, and shall apply with respect to the homeporting of vessels after that date, regardless of whether the continuous period of homeporting concerned commenced before that date. B Personnel Matters 111. Assessment of Navy standard workweek and related adjustments (a) Assessment The Secretary of the Navy shall conduct a comprehensive assessment of the Navy standard workweek. (b) Other requirements The Secretary shall— (1) update Office of the Chief of Naval Operations Instruction 1000.16L in order to— (A) obtain an examination of current in-port