Vessel stability requirements and safety lessons for domestic commercial vessels (DCVs). Best practice guidance to stop your vessel from capsizing.
Operational requirements
Stability risk assessment
Applies to all vessels (Class 1, 2, 3 and 4) except those eligible for a simplified SMS.
Record of modifications affecting stability
Applies to Class 1, 2 and 3 vessels.
Best practice guidance
Commercial fishing vessels (Class 3)
Fishing vessel stability checklist PDF532.8 KB
A checklist to help you risk assess stability on your vessel.
Guide to fishing vessel stability
Understand the factors that influence fishing vessel stability.
Hook-up response for trawlers
Steps to follow in a hook-up situation.
Construction barges (Class 2)
Construction barge stability
Learn about construction vessel stability and hazards.
Safety lessons
- ‘Experience’ fails to prevent vessel capsize, which a proper risk assessment could have identified
- Work boat capsizes while relocating shifted mooring
- Landing barge capsizes after exceeding maximum weight limit in vessel stability book
Design, construction and equipment requirements
From the National Standard for Commercial Vessels (NSCV).
- Intact stability requirements - C6A
- Buoyancy and stability after flooding - C6B
- Stability tests and stability information - C6C
Last updated: 28 January 2026