Stations with an offshore lifeboat have a full-time mechanic, while some have a full-time coxswain. However, most lifeboat crews are volunteers.

There are 46 lifeboat stations on the island of Ireland

32 Irish lifeboat crew have been lost in rescue missions, including the 15 crew of the Kingstown (now Dun Laoghaire) lifeboat which capsized while attempting to rescue the crew of the SS Palme on Christmas Eve 1895

In 2019, 8,941 lifeboat launches saved 342 lives across the RNLI fleet.

The Irish fleet is a mixture of inshore and all-weather (offshore) craft. The offshore lifeboats, which range from 17m to 12m in length are either moored afloat, launched down a slipway or are towed into the sea on a trailer and launched. The inshore boats are either rigid or non-rigid inflatables.

The Irish Coast Guard in the Republic of Ireland or the UK Coastguard in Northern Ireland task lifeboats when an emergency call is received, through any of the recognised systems. These include 999/112 phone calls, Mayday/PanPan calls on VHF, a signal from an emergency position indicating radio beacon (EPIRB) or distress signals.

The Irish Coast Guard is the government agency responsible for the response to, and co-ordination of, maritime accidents which require search and rescue operations. To carry out their task the Coast Guard calls on their own resources – Coast Guard units manned by volunteers and contracted helicopters, as well as "declared resources" - RNLI lifeboats and crews. While lifeboats conduct the operation, the coordination is provided by the Coast Guard.

A lifeboat coxswain (pronounced cox'n) is the skipper or master of the lifeboat.

RNLI Lifeboat crews are required to follow a particular development plan that covers a pre-agreed range of skills necessary to complete particular tasks. These skills and tasks form part of the competence-based training that is delivered both locally and at the RNLI's Lifeboat College in Poole, Dorset

While the RNLI is dependent on donations and legacies for funding, they also need volunteer crew and fund-raisers.