Section 175.17 - Exemptions(a) Canoes and kayaks 16 feet or more in length are exempted from the requirements for carriage of the additional throwable PFD required under § 175.15(b) .(b) Racing shells, rowing sculls, racing canoes, and racing kayaks are exempted from the requirements for carriage of any PFD required under § 175.15 .(c) Sailboards are exempted from the requirements for carriage of any PFD required under § 175.15 .(d) Vessels of the United States used by foreign competitors while practicing for or racing in competition are exempted from the carriage of any PFD required under § 175.15 , provided the vessel carries one of the sponsoring foreign country's acceptable flotation devices for each foreign competitor onboard.USCG-2013-0263, 79 FR 56499, Sept. 22, 2014