33 C.F.R. § 144.01-40 Emergency communications equipment.
Title 33 - Navigation and Navigable Waters
On manned platforms means of communication by radio and/or wire telephone shall be provided for contacting the shore or vessels in the vicinity for aid in the event of an emergency. [CGFR 56–4, 21 FR 903, Feb. 9, 1956]
Title 33: Navigation and Navigable Waters
PART 144—LIFESAVING APPLIANCES
Subpart 144.01—Manned Platforms
§ 144.01-40 Emergency communications equipment.