Both Wicklow RNLI lifeboats launched after 7.20pm on Sunday evening to assist two men in a small motor cruiser near Wicklow Head.
A member of the public contacted the Coast Guard, after seeing the men bailing water out of the vessel.
The motor cruiser was located about a half mile northeast of Wicklow Head a short time later.
Weather conditions on scene were described as sea state moderate with wind north-easterly force three. Visibility was good.
The boat was taken in tow by the all-weather lifeboat back to Wicklow harbour, where the two occupants were taken ashore safe and well by the inshore lifeboat crew.