Section 218.20 - Specified activity and specified geographical region(a) Regulations in this subpart apply only to the U.S. Navy (Navy) and those persons it authorizes or funds to conduct activities on its behalf for the taking of marine mammals that occurs in the areas outlined in paragraph (b) of this section and that occurs incidental to maintenance construction activities, as defined in a Letter of Authorization (LOA).(b) The taking of marine mammals by the Navy may be authorized in a LOA only if it occurs within Washington inland waters in the vicinity of one of the following six naval installations: Naval Base Kitsap Bangor, Zelatched Point, Naval Base Kitsap Bremerton, Naval Base Kitsap Keyport, Naval Base Kitsap Manchester, and Naval Station Everett. 84 FR 15983 , 5/17/2019 through 5/17/2024