33 C.F.R. § 164.42 Rate of turn indicator.
Title 33 - Navigation and Navigable Waters
Each vessel of 100,000 gross tons or more constructed on or after September 1, 1984 shall be fitted with a rate of turn indicator. [CGD 83–004, 49 FR 43468, Oct. 29, 1984]
Title 33: Navigation and Navigable Waters
PART 164—NAVIGATION SAFETY REGULATIONS
§ 164.42 Rate of turn indicator.

