46 C.F.R. § 58.25-45 Buffers.
Title 46 - Shipping
For each vessel on an ocean, coastwise, or Great Lakes voyage, steering gear other than hydraulic must be designed with suitable buffering arrangements to relieve the gear from shocks to the rudder.
Title 46: Shipping
PART 58—MAIN AND AUXILIARY MACHINERY AND RELATED SYSTEMS
Subpart 58.25—Steering Gear
§ 58.25-45 Buffers.