USCG Exam PracticeAuxiliary machinery and shipboard systems
According to 46 CFR §58.25-10, 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. At what vessel speed must this be demonstrated?
- A. Maximum ahead service speed at deepest loadline draft
- ✓ One-half maximum ahead service speed or 7 knots, whichever is greaterCorrect
- C. One-half maximum ahead service speed or 5 knots, whichever is lesser
- D. Maximum astern speed at deepest loadline draft
Why B is correct
46 CFR §58.25-10(d)(2) specifies that the auxiliary steering gear rudder movement requirement must be met with the vessel at its deepest loadline draft and running at one-half maximum ahead service speed or 7 knots, whichever is greater. Maximum ahead service speed and maximum astern speed are criteria for the main steering gear.
Cited:46 CFR §58.25-10