Three crew members were rescued after their boat broke down close to the Lord Nelson monument on the Menai Strait.
The vessel was at anchor after suffering propulsion problems when the RNLI's inshore lifeboat from Beaumaris was called out at around 8.55pm on Friday night.
The boat crew were taken back to shore at the pier at Menai Bridge where the mobile coastguard team from Bangor were on hand to help them further.
A RNLI Beaumaris spokesperson said: "The first informant did the correct thing in alerting the Coastguard to the situation. This meant our volunteer lifeboat crew were able to reach the location quickly, assess the situation."
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