L.É. Niamh  P 52

L.É. NIAMH (the second of the Róisín class) was built in Appledore Shipyard in the UK for the Naval Service. She is an improved version of her sister ship, L.É.ROISIN and Naval Service engineers stood by her construction at all stages. She is built to the successful RóisÁn design that optimises her patrol performance in Irish waters (which are among the roughest in the world), year round. For that reason a greater length overall (78.8m) was chosen, giving her a long sleek appearance.

Office Commanding the L.É. Niamh

Lieutenant Commander Armstrong joined the Irish Navy in 1999 and was commissioned in 2001. He qualified as a watch-keeper in 2004.  He assumed command of L.É. NIAMH in January 2017. During his career to date Lt Cdr Armstrong has served at sea as Navigation Officer L.É. NIAMH, Gunnery Officer L.É. NIAMH & Executive Officer LE NIAMH. In 2005 he served on exchange with the Norwegian Coast Guard operating out of Bergen.

Ashore he has served as Cadet Class Officer, OC Eastern Naval Reserve Cadre, Operations Staff Officer in Defence Head Quarters, Contracts Officer and most recently N.S.O & Naval Service Budget Manager.

Lieutenant Commander Armstrong is a graduate of the Cork Institute of Technology & the National Maritime College of Ireland where he studied Nautical Science and Senior Command Studies. He is also a graduate of the International Warfare College HMS CoOLLINGWOOD where he completed the International Long Navigation Course.

Lieutenant Commander Armstrong is a sports fan with a keen interest in Rugby, in which he has played, coached and refereed at many levels. He is also interested in sailing, water skiing and 4x4 offroading.

Lieutenant Commander Armstrong is originally from County Wicklow.

Ships Name

There are many references to Niamh in Irish mythology however the best known is Niamh Chinn Oir, the daughter of Ri na nOg. She was in love with Oisin, the son of Fionn Mac Cumhaill. One morning Niamh rode on a white horse to Loch Lein near Kerry where she persuaded Oisin to return to Tir na nOg.

On arriving in Tir na nOg Oisin was greeted by Ri na nOg and was told that he would enjoy everlasting life and perpetual youth. Niamh and Oisin married and had three children, Fionn, Oisin and Plur na mBan.

Significant History 

One of Niamh’s most notable episodes was her deployment to Asia in 2002, which was the first ever visit of an Irish warship to that part of the world and included official visits to China, Japan, Korea and Malaysia, together with a refuelling stop in India and a UN resupply visit to Irish Troops based in Eritrea.

Ships Charity

St. Munchin's neo-natal Hospital Limerick.

Adopted Port


Ships Information

This ship is classed as a Large Patrol Vessel.

Le Niamh Videos


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