Published on Australian Maritime Safety Authority (https://www.amsa.gov.au)
The difference between the duties the holder can perform are outlined below:
Some persons holding a current Mate<80m may need a specific exemption to work on larger vessels than the new CoC permits, or work towards a higher certificate if their employer requires them to be second in command on a vessel between 45m and 80m in length.
Specific exemptions will be considered for persons where their current work requires them to perform duties not covered by the Master <24m CoC.
AMSA will be contacting these persons over the coming months and working closely with them to ensure they remain on track for career progression.
For more detailed information, read the guidelines PDF1.12 MB document on the new revised Marine Order 505.