USCG Exam PracticeAuxiliary machinery and shipboard systems
Under 46 CFR §58.25-10(d), 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 greaterCorrect
- C. One-third maximum ahead service speed or 5 knots, whichever is lesser
- D. Maximum astern speed
Why B is correct
46 CFR §58.25-10(d)(2) states the auxiliary steering gear must meet the 60-second rudder movement requirement at the deepest loadline draft and running at one-half maximum ahead service speed or 7 knots, whichever is greater. Maximum ahead service speed is the standard for the main steering gear, not the auxiliary.
Cited:46 CFR §58.25-10