Introduction
Ship stability ensures a vessel remains upright under all conditions. Understanding it is crucial for safe operations.
Why Ships Don’t Capsize Easily
- Low center of gravity
- Wide hull design
- Proper cargo distribution
Key Concepts
GM (Metacentric Height)
- Indicates initial stability
- High GM = stiff ship
- Low GM = tender ship
Real-Life Example
- Overloading one side → ship list
- Improper tank filling → instability
Free Surface Effect
Occurs when liquid moves inside tanks, reducing stability.
Stability Mistakes
- Uneven cargo loading
- Ignoring ballast
- Poor planning
Case Study
Cargo shift in rough weather can cause capsizing.
FAQs
Q1: What is safe GM?
Depends on vessel type.
Q2: Why is free surface dangerous?
It reduces stability significantly.
Conclusion
Ship stability is not just theory—it directly impacts safety at sea.
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