Exam Question
(a) What are the various Static stresses that act on a vessel at rest in still water? Explain with the aid of sketches. (10)
(b) Give examples for dynamic stresses on a vessel.
Class 4 (4th Engineer)
SC&S
📅 Oct 2023
Reference Answer
### (a) Static Stresses on a Vessel in Still Water
Static stresses are forces that act on a ship's hull when it is at rest in calm, still water. These stresses arise from the distribution of the vessel's own weight and the buoyant forces supporting it. The primary static stresses are longitudinal (hogging and sagging) and transverse (water pressure).
#### 1. Longitudinal Bending Stresses: Hogging and Sagging
These are the most significant global stresses acting on the hull girder. They are caused by the non-uniform distribution of weight (W) and buoyancy (B) along the length of the ship.
Static stresses are forces that act on a ship's hull when it is at rest in calm, still water. These stresses arise from the distribution of the vessel's own weight and the buoyant forces supporting it. The primary static stresses are longitudinal (hogging and sagging) and transverse (water pressure).
#### 1. Longitudinal Bending Stresses: Hogging and Sagging
These are the most significant global stresses acting on the hull girder. They are caused by the non-uniform distribution of weight (W) and buoyancy (B) along the length of the ship.
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