Section 270:25 - Muffling DevicesI. No person shall own or operate or sell or offer for sale, within the jurisdiction of this state, a boat propelled in whole or in part by gas, gasoline, diesel, or naphtha unless the boat is provided with an underwater exhaust or other muffling device constructed and used so as to muffle the noise of the explosion. Nothing in this paragraph shall be construed to require an underwater exhaust or other muffling device on a boat that is being sold for salvage purposes.II. A boat may be equipped with a switchable device that will reduce the exhaust noise level in compliance with the limits established by RSA 270:37.III. The provisions of this section shall not apply to antique boats or classic boats which have met the decibel levels established in RSA 270:37 and have been issued a permit exempting them from this section. For the purposes of this section "antique boat" means a boat built prior to 1943 and "classic boat" means a boat built between 1943 and 1968 inclusive.IV. No person shall own, operate, sell, or offer for sale any boat which is capable of discharging exhaust above the water unless the boat is equipped with muffling devices.Amended by 2011,:12011, 18, eff. 6/24/2011.1941, 160:1. RL 181:23. RSA 270:25. 1971, 239:1. 1981, 353:11. 1987, 370:3. 1991, 369:1. 1992, 132:4. 2006, 234:1, eff. June 1, 2006. 2011, 18:1, eff. June 24, 2011.