47 C.F.R. § 22.1011 Antenna height limitations.
Title 47 - Telecommunication
The antenna height of offshore stations must not exceed 61 meters (200 feet) above mean sea level. The antenna height of offshore surface mobile stations must not exceed 10 meters (30 feet) above the waterline.
Title 47: Telecommunication
PART 22—PUBLIC MOBILE SERVICES
Subpart I—Offshore Radiotelephone Service
§ 22.1011 Antenna height limitations.