AMSA will close from 5 pm AEDT Wednesday 24 December 2025, re-opening on Friday 2 January 2026. Our search and rescue team will continue to operate every day (24/7). See which services are affected.

AMSA 172

Alteration certificate (form 172)


Overview

You can use this form to obtain an alteration certificate.

Submitting the form

Forms can be submitted along with the lodgement fee to:

The Registrar of Ships
Australian Shipping Registration Office

Postal address:
PO Box 255
Coffs Harbour NSW 2450

Courier address:
Level 2, 28 Gordon Street
Coffs Harbour NSW 2450 Australia
Telephone (02) 6279 5925

Last updated: 5 September 2025