Mo. Rev. Stat. § 306.165
Each water patrol officer appointed by the Missouri state water patrol and each of such other employees as may be designated by the patrol, before entering upon his or her duties, shall take and subscribe an oath of office to perform all duties faithfully and impartially, and shall be given a certificate of appointment, a copy of which shall be filed with the secretary of state, granting all the powers of a peace officer to enforce all laws of this state, upon all of the following:
(6) Any other jurisdictional area, pursuant to the provisions of section 306.167.
Each water patrol officer may board any watercraft at any time, with probable cause, for the purpose of making any inspection necessary to determine compliance with the provisions of this chapter. Each water patrol officer may arrest on view and without a warrant any person he or she sees violating or who such patrol officer has reasonable grounds to believe has violated any law of this state, upon any water or land area subject to his or her jurisdiction as provided in this section. Each water patrol officer shall, within six months after receiving a certificate of appointment, satisfactorily complete a law enforcement training course including six hundred hours of actual instruction conducted by a duly constituted law enforcement agency or any other school approved pursuant to chapter 590, RSMo.
(L. 1963 p. 424 §1, A.L. 1971 S.B. 2, A.L. 1977 S.B. 194, A.L. 1985 H.B. 280, et al., A.L. 1989 S.B. 135, A.L. 2001 H.B. 732 merged with S.B. 443)
Effective 5-16-01 (S.B. 443); 8-28-01 (H.B. 732)