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Watertight and weathertight integrity - C2

Controlling the risks that weather and water pose to a vessel.


Download NSCV Section C2 - Watertight and weathertight integrity PDF1.61 MB

Frequently asked questions (FAQs) about The National Standard for Commercial Vessels, Part C–Design and construction, Section 2.

Full title 

National Standard for Commercial Vessels

Part C – Design and construction

Section 2 – Watertight and weathertight integrity

Current edition

Edition 1

Commenced 1 January 2023


NSCV C2 provides the design, construction, installation and maintenance standards for

  1. watertight and weathertight integrity;
  2. rapid drainage of water from decks;
  3. reserve buoyancy; and
  4. prevention of overloading.

This Section of the National Standards for Commercial Vessels (NSCV) was developed following a review of the Uniform Shipping Laws (USL) Code Section 5C Watertight subdivision of passenger vessels, Section 5D Watertight subdivision of Class 2 and Class 3 vessels and Section 7 Load lines. This is the final USL Code design and construction standard to be modernised and replaced by the NSCV.

Compliance with this NSCV C2 is voluntary for construction of new vessels for 24 months from date of commencement. See GES 2022/1.

Before 1 January 2025 we will allow vessels to comply with either NSCV section C2 or the USL Code sections 5C, 5D and 7 (see link below).

From 1 January 2025, compliance with NSCV section C2 is mandatory for domestic commercial vessels which enter commercial service for the first time after that date.

Assistance and tools 

Frequently asked questions (FAQs) about The National Standard for Commercial Vessels, Part C–Design and construction, Section 2.

Sections of the USL Code to apply under the national system PDF233.76 KB

International Convention on Load Lines (ILLC) and Protocol of 1988 (ILLC)

Use these editable templates to prepare a stability placard.

Although these templates are optional, they can help support your compliance with the NSCV.

There are 2 versions available to download.

Things to remember when you use this optional placard template:

  • print on durable and weather-resistant material
  • display in a prominent position
  • maintain in good repair and legible condition.

Generic equivalent solution:


Policy and Regulation Division

To provide feedback or report issues / errors with this or any other any NSCV or related webpages, contact us at  NSCVfeedback@amsa.gov.au 

Please include the name and clause number of the NSCV in the email.

For enquiries relating to an application please email dcvsurvey@amsa.gov.au

Last updated: 1 August 2023