Six lifebuoys were stolen and four boxes were damaged in a "mindless" act of vandalism in Clontarf last week.
Dublin City Council has since replaced or repaired all of the vandalised lifebuoys in the coastal town. They said there are approximately 15 lifebuoys stolen or vandalised each week, which results in the Council replacing or repairing around 600 per year.
Howth Coast Guard slammed the incident online as "mindless vandalism". They said: "Several of the ringbuoys and their boxes damaged on Clontarf coastline overnight. Mindless vandalism risking lives on the coast.