Q5 (16 Marks)
Propeller, shafting & thrusters
SC&S • Written Exam
Describe with the aid of sketches how each of the following contribute towards improving the propulsive efficiency of a ship:
(a) Ducted propeller (5)
(b) Costa bulb as fitted to rudder (5)
(c) Grim wheel vane as fitted aft of the propeller (6)
Appeared In:
Aug 2026