Pagers sounded for the Holyhead RNLI crew just after 8am following a distress call to HM Coastguard from the 10m potting vessel, which was some 21 miles northwest of Holyhead.
On reaching the stricken boat, the crew on the lifeboat Christopher Pearce set up a tow for the slow return to Holyhead. In all the lifeboat was five hours at sea.
Aafter ensuring all were well, the fishermen set off to return to Ireland on the next ferry, leaving their vessel to be repaired locally.
Holyhead coxswain Tony Price said: “The casualty craft and her crew were well-equipped. It’s always a shame for any craft or persons in difficulty, but it’s particularly sad when a vessel is earning her living from the sea, and we wish our Irish fishermen friends a speedy return to normality after their misfortune.
“I’d also like to send thanks to the local coastguard teams for helping with mooring the craft safely back in Holyhead.”