HMS Bredah (1679)

Spike Island (Irish: Inis Píc) is an island of 103 acres (42 ha) in Cork Harbour, Ireland. Originally the site of a monastic settlement, the island is dominated by an 18th-century bastion fort now named Fort Mitchel. The island's strategic location within the harbour meant it was used at times for defence and as a prison. Since the early 21st century the island has been developed as a heritage tourist attraction, with €5.5 million investment in exhibition and visitor spaces and accompanying tourism marketing. There were in excess of 81,000 visitors to the island during 2019, a 21% increase on 2018 numbers. Spike Island was named top European tourist attraction at the 2017 World Travel Awards.

Camden Fort Meagher is a coastal defence fortification close to Crosshaven, County Cork, Ireland. Together with similar structures at Fort Mitchell (Spike Island), Fort Davis (Whitegate), and Templebreedy Battery (also close to Crosshaven), the fort was built to defend the mouth of Cork Harbour. Though originally constructed in the 16th century, the current structures of the fort date to the 1860s. Originally named Fort Camden and operated by the British Armed Forces, the fort (along with other Treaty Port installations) was handed-over to the Irish Defence Forces in 1938. Renamed Fort Meagher in honour of Thomas Francis Meagher, it remained an Irish military installation until 1989 when the Irish Army handed the fort over to Cork County Council. It remained largely overgrown until 2010 when a group of local volunteers began restoration and development of the fort for heritage and tourism purposes. The fort was renamed Camden Fort Meagher and is now open seasonally to visitors, with exhibits on the fort's Brennan torpedo installation (the world's first "practical guided weapon").

The Spit Bank Lighthouse close to Cobh in County Cork, Ireland is a screw-pile lighthouse which marks a shallow bank in the navigable channels of lower Cork Harbour. The platform was built by the blind Irish engineer Alexander Mitchell (who pioneered the screw-pile technology used), with the lighthouse itself designed by George Halpin. In use since its completion between 1851 and 1853, and renovated as recently as 2013, the landmark structure marks the boundary of compulsory pilotage for large vessels entering the Port of Cork.

Fort Davis (Irish: Dún an Dáibhisigh; previously Fort Carlisle), is a coastal defence fortification close to Whitegate, County Cork, Ireland. Together with similar structures at Fort Mitchel (Spike Island), Fort Camden (Crosshaven), and Templebreedy Battery (also close to Crosshaven), the fort was built to defend the mouth of Cork Harbour. Though used as a fortification from the early 17th century, the current structures of the 74-acre site date primarily from the 1860s. Originally named Fort Carlisle and operated by the British Armed Forces, the fort was handed-over to the Irish Defence Forces in 1938, and renamed Fort Davis. The facility is owned by the Department of Defence, and is used as a military training site with no public access.

East Cork lies in south-west Ireland, in Ireland's largest county, County Cork. The term "East Cork" is used in tourism, sporting and other contexts, and is the name given to one of eight municipal districts of Cork County Council.East Cork contains one of the world's largest natural harbours, Cork Harbour. Fota Island (including Fota House and Gardens and Fota Wildlife Park) is also east of Cork City, and Fota Island Golf Course hosted the Irish Open golf tournament in 2001. Towns and "key villages" in the East Cork municipal district of Cork County Council include Midleton, Youghal, Castlemartyr, Cloyne, Killeagh, Whitegate and Aghada. Other smaller villages include Ballycotton, Ballymacoda, Dungourney, Ladysbridge, Mogeely, Saleen, and Shanagarry.

Haulbowline (Irish: Inis Sionnach; Old Norse: Ál-boling) is an island in Cork Harbour off the coast of Ireland. The world's first yacht club was founded on Haulbowline in 1720. The western side of the island is the main naval base and headquarters for the Irish Naval Service, with the eastern side previously used for heavy industry and later redeveloped as a park.Since 1966, the island has been connected to the mainland by a roadbridge.

The Naval College is the principal naval military college in Ireland providing training to cadets, non-commissioned officers and recruits of the Irish Naval Service. The Naval College trains and educates personnel for service, providing a mixture of different courses ranging from officer training right through to naval engineering. The Naval College is based out of the Naval Service's headquarters at Naval Base Haulbowline but also provides classes and lessons in non-military naval training at the nearby National Maritime College of Ireland in Ringaskiddy.

The National Maritime College of Ireland (Irish: Coláiste Náisiúnta Mara na hÉireann, NMCI) is a public maritime college located in Ringaskiddy, County Cork, Ireland. It is a constituent college of the Munster Technological University. Founded in 2004, it is situated on former Department of Defence land aside the Haulbowline naval base, the headquarters of the Irish Naval Service. It is the first dedicated maritime college of its kind in the State, and was built under the Irish Government's Public-Private Partnership scheme, involving the Munster Technological University (formerly, Cork Institute of Technology), the Naval Service and a number of other partners. The Irish Naval Service and other Defence Forces personnel carry out non-combat training at the National Maritime College of Ireland, with a permanent Naval Service cadre present on site to assist in the carrying out of this training.

Whitegate power station is a 445 MW combined cycle gas turbine (CCGT) electricity generating station near Whitegate, County Cork in Ireland. It was commissioned in 2010 and can supply up to ten percent of the electricity demand in Ireland.

Cove Fort is a small bastioned land battery to the east of Cobh in County Cork, Ireland. Built as a coastal defence fortification in 1743, on instruction of the then Vice-Admiral of the Coast, it replaced a number of temporary coastal artillery batteries which defended Cork Harbour.The seaward fortifications included a demi-bastioned frontage with three tiers of gun emplacements commanding the harbour's main shipping channel and defending the naval yards at Haulbowline. While the landward walls included musketry flanking-galleries, later 18th century reports criticised the fact that the fort was overlooked by higher ground to the rear and that planned landward bastion defences had not been built. A 1763 report recorded the fort as having a number of 24-pounder long guns, and a later survey by Charles Vallancey records a small detachment of Royal Irish Artillery at the site. By 1811 there were 20 or more 24-pounder guns in place.In the 19th century the harbour's other defences were expanded at Fort Westmoreland (Spike Island), Fort Carlisle (Whitegate), and Fort Camden (Crosshaven), and by the end of the Napoleonic Wars Cove Fort came to house a naval and military hospital. By the 1830s the site was largely given-over to this use, and though used as a barracks, was no longer used primarily for battery defence. The "Queenstown Military Hospital" remained in operation until after World War I. The area of the fort now houses a Port of Cork operations building and harbour pilot station, and is the site of a park (Bishop Roche Park), and the Cobh Titanic Memorial Garden. The latter includes a glass structure which has been engraved with the names of the 123 passengers who boarded at Cobh – RMS Titanic's last port of call. The memorial garden has a line-of-sight to the last anchorage point of the Titanic, close to Roche's Point at the mouth of the harbour.

The Port of Cork (Irish: Port Chorcaí) is the main port serving the South of Ireland, County Cork and Cork City. It is one of the three "Ports of National Significance (Tier 1)" as designated by National Ports Policy.It offers all six shipping modes (i.e. Lift-on Lift-off, Roll-on Roll-off, Liquid Bulk, Dry Bulk, Break Bulk and Cruise). In 2015, over 11 million tonnes of freight were shipped through the Port of Cork, making it the state’s second busiest port. As well as its berths upriver at Cork City, the port also includes other major locations across Cork Harbour, including Tivoli loading docks in the eastern suburbs, Cobh on the south of Great Island and Ringaskiddy on the west side of the harbour.