Exam Question
(a) What is a right-handed and a left-handed propeller? (4)
(b) With the aid of simple sketches explain Rake, Skew and Pitch of the propeller. (6)
(c) What are the advantages and disadvantages of CPP?
Class 4 (4th Engineer)
SC&S
📅 May 2023
Reference Answer
### (a) Right-handed and Left-handed Propellers
**Definition:**
The 'handedness' of a propeller describes its direction of rotation to produce forward thrust, as observed from the stern of the vessel looking forward towards the bow.
* **Right-handed (RH) Propeller:** A propeller is designated as right-handed if it rotates in a **clockwise** direction to propel the vessel forward. This is the most common configuration for single-screw vessels.
**Definition:**
The 'handedness' of a propeller describes its direction of rotation to produce forward thrust, as observed from the stern of the vessel looking forward towards the bow.
* **Right-handed (RH) Propeller:** A propeller is designated as right-handed if it rotates in a **clockwise** direction to propel the vessel forward. This is the most common configuration for single-screw vessels.
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