A new promotional body has been set up to help recruit more sailors for the Asgard II training vessel.
The tall ship was commissioned in March 1981 and members of the public of all ages and from all backgrounds have embarked on its cruises.
The Cairde Asgard initiative was launched by Minister of State for Defence Tom Kitt last night to raise awareness about the ship and its benefits.
Most of the people who opt for coastal and offshore voyages around Ireland, Britain, France and farther afield find out about the experience through word of mouth. But it is hoped that Cairde Asgard - which includes advocates who have sailed on the vessel previously - will actively campaign to get more people interested in the opportunity.
Marketing director Joannes Berkery said members of the support group would help dispel misconceptions that have existed about the Asgard - that those who go on a voyage are young, have previous maritime experience and that trips are often full up.
Ms Berkery said there are berths available and voyages were not for elitist groups.
A crew of five permanent staff work on the ship, there is room for 20 volunteers and fees "are kept low to keep the cost within the reach of as many as possible".
Capt Colm Newport of the Asgard II said that while a trip on board was a unique and enjoyable challenge, it did involve discipline and people were expected to pull their weight.
Daily duties include steering, sail handling, scrubbing decks, look-out, repairs to gear and rigging, cooking and cleaning.
Asgard II can be viewed, alongside the LE Niamh, at Sir John Rogerson's Quay on Dublin's south city quays today and tomorrow from 2pm to 5.30pm - depending on tidal movements.