USCG Exam PracticeAuxiliary machinery and shipboard systems
The auxiliary steering gear must be capable of moving the rudder from 15° on either side to 15° on the other in not more than 60 seconds. This performance must be achieved with the vessel at its deepest loadline draft and running at what speed?
- A. Maximum ahead service speed.
- ✓ One-half maximum ahead service speed or 7 knots, whichever is greater.Correct
- C. One-half maximum ahead service speed or 7 knots, whichever is lesser.
- D. Maximum astern speed at the deepest loadline draft.
Why B is correct
46 CFR §58.25-10(d)(2) specifies the 15°-to-15° in 60 seconds requirement applies at one-half maximum ahead service speed or 7 knots, whichever is greater, at deepest loadline draft. Choosing the lesser value would set a lower and less demanding standard than the regulation intends.
Cited:46 CFR §58.25-10