Exam Question
(a) What is the significance of GM-GZ curve (10)
(b) What is meant by stability criteria of a ship (6)
Class 4 (4th Engineer)
SC&S
📅 Apr 2024
Reference Answer
### (a) Significance of the GM-GZ Curve (Curve of Statical Stability)
The GZ curve is a graphical representation of a ship's transverse statical stability. It plots the righting lever (GZ) against the angle of heel (θ) for a specific displacement and vertical center of gravity (KG). Its significance lies in the comprehensive assessment of a ship's stability characteristics far beyond the initial stability indicated by GM alone.
Key information derived from the GZ curve includes:
1. **Initial Stability (Metacentric Height, GM)**:
The GZ curve is a graphical representation of a ship's transverse statical stability. It plots the righting lever (GZ) against the angle of heel (θ) for a specific displacement and vertical center of gravity (KG). Its significance lies in the comprehensive assessment of a ship's stability characteristics far beyond the initial stability indicated by GM alone.
Key information derived from the GZ curve includes:
1. **Initial Stability (Metacentric Height, GM)**:
Full answer on MeoMock — surveyor-grade reference answers for 7,000+ written exam questions.
Prepare on Android — MeoMock on Google Play