General requirements - B

Find out about vessel categories, calculating vessel size, and read the dictionary of definitions.



Full title 

National Standard for Commercial Vessels

Part B – General requirements 

Current edition

Edition 2.4

Commenced 1 January 2023


NSCV Part B - specifies the following:  

  1. the application and objectives of the NSCV;  
  2. a system for the categorization of vessels;  
  3. methods for calculating the measured length, depth and gross tonnage of vessels;  
  4. a dictionary of definitions for the NSCV


This NSCV was updated as a result of the NSCV Omnibus amendments instrument No 1, 2022 (AMSA has made minor editorial amendments to eight NSCVs to address consequential amendments resulting from the revocation of NSCV Part D).

Summary of changes:

[1] In clause 1.6 Meeting the required outcomes, (c):


“the vessel meets an equivalent means of compliance approved by the Australian Maritime Safety Authority under:

(i) section 1.6 of NSCV Part B, as in force on 31 December 2017; or

(ii) section 3.4 of NSCV Part E, as in force on 9 June 2016.”


“the vessel meets an equivalent means of compliance approved by the Australian Maritime Safety Authority under the NSCV in force prior to 1 January 2018.

NOTE 1: This ensures that equivalent means of compliance approved under earlier versions of the NSCV continue to be recognised.”

The full list of changes is available via the following link: NSCV Omnibus amendments instrument No1 2022 (PDF 241.31 KB)


Superseded standards for commercial vessels

Assistance and tools 

NSCV Part B (Recognised Islands) Determination 2016 (PDF 148.32 KB) (PDF 148.32 KB)  

NSCV Part B (Specified Areas) Determination 2018 (PDF 109.26 KB) (PDF 109.26 KB) and schedules listed below:  

More maps are available for Tasmania depicting the C restricted areas and sheltered water limits:  

Generic equivalent solution:


Policy and Regulation Division

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Last updated: 

Tuesday 1 August 2023