I refer the Deputy to Marine Notice No. 6 of 2014 which advises on the transition of Able Seaman certificates issued prior to 1st January 2012 to the Able Seafarer (Deck) Certificate of Proficiency. Such certificates were valid until 31st December 2016 providing that holders completed the transition to Able Seafarer (Deck) before that date.
Persons failing to meet this deadline must now make a fresh application to obtain an Able Seafarer Deck Certificate in line with the requirements set out in the Marine Notice.
http://www.dttas.ie/sites/default/files/MN06of2014_TransitionFromAbleSeamantoAbleSeafarer.pdf
The eligibility criteria and application process to acquire an Irish Seafarers Discharge book can be found on my Department’s Seafarers website at the following link
https://seafarers.ie/General-Information/Seafarers-Discharge-Book-and-ID-Card#593116-seafarers-discharge-book
It should be noted that an Able Seafarer Deck Certificate is not a requirement for the acquisition of a discharge book.