[Code of Federal Regulations] [Title 36, Volume 1] [Revised as of July 1, 2001] From the U.S. Government Printing Office via GPO Access [CITE: 36CFR3.21] [Page 34] TITLE 36--PARKS, FORESTS, AND PUBLIC PROPERTY CHAPTER I--NATIONAL PARK SERVICE, DEPARTMENT OF THE INTERIOR PART 3--BOATING AND WATER USE ACTIVITIES--Table of Contents Sec. 3.21 Swimming and bathing. (a) The following are prohibited: (1) Swimming or bathing in locations designated as closed. (2) Swimming or bathing in violation of designated restrictions. (3) Swimming from vessels which are underway, except in circumstances where a capable operator is on board and all propulsion machinery is off and/or sails are furled. (b) The superintendent may prohibit the use of flotation devices, glass containers, kites, or incompatible sporting activities within locations designated as swimming beaches.