USCG Exam PracticeAuxiliary machinery and mechanical systems
Under 46 CFR, power-operated main steering gear is required when the diameter of the rudder stock in way of the tiller exceeds which dimension?
- A. 9 centimeters (3.5 inches)
- ✓ 12 centimeters (4.7 inches)Correct
- C. 23 centimeters (9 inches)
- D. 30 centimeters (11.8 inches)
Why B is correct
46 CFR §58.25-10(c)(3) requires the main steering gear to be operated by power when the diameter of the rudder stock is over 12 centimeters (4.7 inches) in way of the tiller, excluding strengthening for navigation in ice. The 23 cm threshold applies to the auxiliary steering gear under §58.25-10(d)(3).
Cited:46 CFR §58.25-10