NSCV Sub-section C6B—Buoyancy and stability after flooding

The National Standard for Commercial Vessels (NSCV) Sub-section C6B provides the minimum requirements for the buoyancy and stability of vessels after flooding.

Full title 

NSCV Part C: Design and construction

Section C6: Stability 

Sub-section C6B: Buoyancy and stability after flooding 


NSCV Sub-section C6B: Buoyancy and stability after flooding – 1 April 2022 (PDF 4.32 MB) 


The National Standard for Commercial Vessels (NSCV) sub-section C6B specifies minimum requirements for the buoyancy and stability of vessels after flooding.  

This Subsection shall be read in conjunction with: 

  • Part B—General Requirements, 
  • Part C Section 2—Watertight and Weathertight Integrity, 
  • Part C Section 4—Fire Safety, 
  • Part C Subsection 6A—Intact Stability Criteria, and 
  • Part C Subsection 6C—Stability Tests and Stability Information. 

This Subsection applies to all vessels other than Special Vessels provided for in NSCV Part F of this standard, unless NSCV Part F specifies otherwise.  


This NSCV was updated as a result of the Omnibus amendments instrument No 1, 2021. (AMSA has made minor editorial amendments to six NSCVs to address minor issues in nature raised by industry).

 Summary of changes:

  1. In the note following clause Quality of inflated materials

The list of changes are available via the following link: NSCV Omnibus amendments instrument No1 2021 (PDF 518.45 KB).


Previous editions: 


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Last updated: 

Monday 12 December 2022