| Surname | Forename | Rank | Unit | Naval_Service |
| BYRNE | James | Able Seaman | H.M.S. "Good Hope" | Royal Navy |
| BYRNE | James | Seaman | S.S. "Cork" (Dublin) | Mercantile Marine |
| BYRNE | James | Stoker 1st Class | H.M.S. "Bittern" | Royal Navy |
| BYRNE | Peter | Winchman | S.S. "Adela" (Dublin) | Mercantile Marine |
| BYRNE | William | Fireman | S.S. "Hare" (Liverpool) | Mercantile Marine |
| CABENA | Frank | Fireman | S.S. "Argyll" (Newport) | Mercantile Marine |
| CAFFNEY | Joseph | Able Seaman | Fishing Vessel "Geraldine" (Howth) | Mercantile Marine |
| CAMPBELL | Matthew | Seaman | H.M. Yacht "Mera" | Royal Naval Reserve |
| CANN | Charles | Engine Room Artificer 4th Class | H.M.S. "Hogue" | Royal Navy |
| CAPRANI | John | Trimmer | H.M. Trawler "Sealark II" | Royal Naval Reserve |
| CARR | Luke | Able Seaman | S.S. "Kangaroo" (Douglas) | Mercantile Marine |
| CARROLL | John | Private | 1st Royal Marine Battalion, Royal Navy Division | Royal Marine Light Infantry |
| CARROLL | Patrick | Chief Petty Officer | H.M.S. "Indefatigable" | Royal Navy |
| CARTON | Michael | Stoker 1st Class | Nelson Battalion, Royal Navy Division | Royal Navy |
| CARVIN | Charles | Seaman | H.M.S. "Hampshire" | Royal Naval Reserve |
| CATHIE | Richard Archibald | Commander | | Royal Navy |
| CAULFIELD | Moses | Able Seaman | H.M.S. "Black Prince" | Royal Navy |
| CLEARY | Philip | Second Engineer | S.S. "G. A. Savage" (Troon) | Mercantile Marine |
| CODY | Thomas | Fireman | S.S. "Leinster" (Dublin) | Mercantile Marine |
| COEN | Edmund Patrick | Wireless Operator | S.S. "Palmella" (Liverpool) | Mercantile Marine |
| COLLINS | Ralphael | Stoker 1st Class | H.M.S. "Cumberland" | Royal Navy |
| CONLAN | Patrick | Private | 1st Royal Marine Battalion, Royal Navy Division. | Royal Marine Light Infantry |
| CONNOLLY | Cornelius Michael | Stoker 1st Class | H.M. Submarine "E24" | Royal Navy |
| CONROY | Charles Wellesley | Third Engineer | S.S. "Cento" (Liverpool) | Mercantile Marine |
| CONWAY | J | Seaman | S.S. "Polandia" (Liverpool) | Mercantile Marine |
| COOGAN | Thomas | Stoker | H.M.S. "Bulwark" | Royal Naval Reserve |
| COOLING | John | Able Seaman | S.S. "Kennington" (London) | Mercantile Marine |
| CORCORAN | Patrick | Cattleman | S.S. "Adela" (Dublin) | Mercantile Marine |
| CORRY | Alexander | First Engineer (Engr. Lieutenant Royal Navy Reserve) | S.S. "W. M. Barkley" (Belfast) | Mercantile Marine |
| CORRY | W | Able Seaman and Quartermaster | S.S. "Falaba" (Liverpool) | Mercantile Marine |
| COX | John Christopher | Leading Signalman | H.M.S. "Hampshire" | Royal Navy |
| CREENAN | J | Sailor | S.S. "Windermere" (Cardiff) | Mercantile Marine |
| CRIMMIN | D | Ordinary Seaman | H.M.S. "Vivid" | Royal Navy |
| CUNNINGHAM | Michael James | Stoker 1st Class | H.M.S. "Majestic" | Royal Navy |
| DALTON | Michael | Stoker 1st Class | H.M.S. "Vanguard" | Royal Navy |
| DALY | Cornelius | Fireman | S.S. "Lofoten" (London) | Mercantile Marine |
| DALY | Daniel | Fireman | S.S. "Lusitania" (Liverpool) | Mercantile Marine |
| DALY | Gerald | Trimmer | H.M.S. "City of Belfast" | Mercantile Marine |
| DALY | Thomas | Stoker 1st Class | H.M.S. "Seagull" | Royal Navy |
| DALY | William | Fireman | H.M.S. "Otranto" | Mercantile Marine Reserve |