More than 90 jobs have been created in marine research and the seafood processing sector.
Taoiseach Enda Kenny made the announcement on a visit to the national research vessel RV Celtic Explorer in Dublin.
A 3.5 million euro grant by the Seafood Processing Business Investment Scheme will generate 64 jobs, while 28 research posts have been developed out of 2 million euro from the International SmartOcean Graduate programme (ISG).
Mr Kenny said Ireland has been recognised as an emerging power in marine research and innovation.
He said: "This has been achieved through the mapping of the 90% of Irish national territory that lies under the Atlantic, the creation of a quarter of a billion euro-worth of marine research infrastructure, and the fostering of strong linkages between industry and research centres, all of which will support employment opportunities in key areas of potential growth in the marine sector."
Mr Kenny also welcomed the expansion of Ireland's capabilities in international shipping services, which is expected to attract additional jobs to the country.
He said the country's emerging shipping services sector has continued to grow, underpinned by a number of investments in new and second-hand ships over the last 12 months by companies such as Arklow Shipping and the Mainport Group, as well as foreign direct investments by D'Amico and Ardmore shipping.
The Seafood Processing Business Investment Scheme is administered by Bord Iascaigh Mhara, the Irish Sea fisheries board, on behalf of the Department of Agriculture, Food and the Marine, and has earlier this year approved over 7 million euro in grant-aided capital investment in the seafood processing sector.
The ISG brings together groupings of expertise from universities focused on marine and related research.