USCG Exam PracticeTwin-screw vessel handling
When rotating a twin-screw vessel about its pivot point with one engine ahead and one astern, what helm position and speed condition are required?
- A. Full rudder toward the ahead engine, with moderate headway
- B. Full rudder away from the ahead engine, with no way on
- ✓ Helm amidships, with no way onCorrect
- D. Helm amidships, with moderate sternway
Why C is correct
Rotating about the pivot point is performed with the helm amidships and no way on; clutching one engine ahead and the other astern turns the boat with little or no advance and transfer. (USCG Boat Crew Seamanship Manual §10-D)