
Greenisland is located on the northeast coast of Ireland, on the northern shores of Belfast Lough and approximately a mile and a half to the southwest of Carrickfergus Harbour. It provides an out-of-the-way anchorage location that could be an anchoring alternative to Carrickfergus Harbour and Marina.
Deep within Belfast Lough, the anchorage provides good protection from northwest through north to northeast. However, the anchorage is entirely exposed from east through south to southwest. Whilst subject to very little westerly fetch, winds from this direction tend to be accelerated as they funnel down the valley into the Lough. The anchorage itself is unmarked but with few off-lying dangers in the area, daylight access is straightforward at any stage of the tide.
Keyfacts for Greenisland
Last modified
June 23rd 2025 Summary
A good location with straightforward access.Facilities
Nature
Considerations
Position and approaches
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Haven position
This is 400 metres south of Green Island in approximately three metres.
What is the initial fix?
The following Belfast Harbour Initial Fix will set up a final approach:
54° 41.710' N, 005° 46.225' W What are the key points of the approach?
Offshore details are available in northeast Ireland’s Coastal Overview for Malin Head to Strangford Lough
and approaches to the lough can be found in the Bangor Harbour
entry.
- Contact 'Belfast Harbour Radio' and make them aware of your intentions.
- Track into the Fairway Light buoy through Belfast Lough's open navigable area that is free of dangers.
- Enter the channel and turn off to starboard at the No. 3 green marker and head for the area offshore of the islet. Or come along the north shore from Carrickfergus keeping half a mile offshore.
Not what you need?
Click the 'Next' and 'Previous' buttons to progress through neighbouring havens in a coastal 'clockwise' or 'anti-clockwise' sequence. Below are the ten nearest havens to Greenisland for your convenience.
Ten nearest havens by straight line charted distance and bearing:
- Newtownabbey - 1.1 nautical miles SW
- Carrickfergus Harbour & Marina - 1.7 nautical miles NE
- Cultra - 2.1 nautical miles SSE
- Helen’s Bay - 4.1 nautical miles ESE
- Belfast Harbour - 5.7 nautical miles SSW
- Whitehead - 6.1 nautical miles NE
- Bangor Harbour & Marina - 6.3 nautical miles ESE
- Ballyholme Bay - 7 nautical miles E
- Groomsport - 8.1 nautical miles E
- Magheramorne Point - 8.1 nautical miles NNE
These havens are ordered by straight line charted distance and bearing, and can be reordered by compass direction or coastal sequence:
- Newtownabbey - 1.1 miles SW
- Carrickfergus Harbour & Marina - 1.7 miles NE
- Cultra - 2.1 miles SSE
- Helen’s Bay - 4.1 miles ESE
- Belfast Harbour - 5.7 miles SSW
- Whitehead - 6.1 miles NE
- Bangor Harbour & Marina - 6.3 miles ESE
- Ballyholme Bay - 7 miles E
- Groomsport - 8.1 miles E
- Magheramorne Point - 8.1 miles NNE
About Greenisland
Greenisland is named after its grassy islet that stands out a short distance from the shore here.
Green Island gave the locallity its nameImage: Michael Harpur
In the 1600s, the West Division of Carrickfergus was established to allocate lands for agricultural purposes west of the town that extended to Greenisland. The area then grew out of the collection of small townlands with strong connections to Carrickfergus. However, Belfast’s rapid growth at the end of the 18th century created a wealthy merchant class for which the Shore Road became a popular destination to construct summer lodges and bathing houses.
The Knockagh Monument stands prominent on the escarpmentImage: Michael Harpur
Bassett’s directory of 1888 notes that it was 'devoted entirely too handsome residences occupied for the greater part by gentlemen engaged in commercial and professional pursuits in Belfast'. As such, the main concentration of houses and amenities commenced on Shore Road with bathing lodges appearing alongside. Stonepoint was constructed in 1860, and Ravenhill, now transformed into Ravenhill Nursing Home that stands directly west of the islet, dates back to 1820. These provided summer lough-side recreation for the newly wealthy industrial classes.
The Knockagh MonumentImage: Joel via CC BY 4.0
These improvements in transport connections and the growth in prosperity led to the development of more semi-detached and terraced houses in the area immediately surrounding the railway station. The increase in local population required improved access to facilities and so churches and schools began to open in the area. The 9-hole golf course was originally opened in 1894 and the overlooking Knockagh Monument, located on top of Carn Hill, was commenced in 1922 in memorial of the people of County Antrim lost during the 1st World War.
Although the foundations of the basalt obelisk monument were laid four years after the war had ended, it was not completed until 1936 in the lead into the Second World War. It was later rededicated in remembrance to those from the County who died in the Second World War when the figures 1939-1945 were added to the inscription. Greenisland continued to grow after the war when large predominantly working-class housing estates were built during the 1950s and 60s. These accommodated factory workers for the local Courtaulds and the large ICI factories in the vicinity as well as for the Carrickfergus and Belfast commuters. The area is therefore an unusual mix of historic and 20th-century built developments.
The protected beach at the head of Jointure Bay is a joy on a summers dayImage: Michael Harpur
Today the village stretches from the shore of Belfast Lough to the foot of Knockagh and is a popular residential location due to its proximity to Belfast and its attractive lough shore setting. The Knockagh Monument is today the most notable landmark of the surrounding area. Those who come here should take the opportunity to climb up to the monument. Standing 278 metres above and overlooking the village, it is the most imposing physical feature on the north side of Belfast Lough. The summit rewards the visitor with panoramic views from Carrickfergus to Belfast and across Belfast Lough, with Scotland and the Mourne Mountains in evidence on clear days.
Dawn view from the Knockagh Monument over the Lough and out to ScotlandImage: Jamie Beckinsale via CC BY 4.0
For the cruising boater, Greenisland offers a convenient anchoring option just over a mile from Carrickfergus. Close to nearby Newtownabbey it also offers good rail connections to the city with plenty immediately ashore to make it worthwhile to launch the dingy. However, on a sunny day, the beach at the head of Jointure Bay is a joy that is the reserve of the boater.
Other options in this area
Click the 'Next' and 'Previous' buttons to progress through neighbouring havens in a coastal 'clockwise' or 'anti-clockwise' sequence. Alternatively here are the ten nearest havens available in picture view:
Coastal clockwise:
Newtownabbey - 0.7 miles SWBelfast Harbour - 3.5 miles SSW
Cultra - 1.3 miles SSE
Helen’s Bay - 2.5 miles ESE
Bangor Harbour & Marina - 3.9 miles ESE
Coastal anti-clockwise:
Carrickfergus Harbour & Marina - 1 miles NEWhitehead - 3.8 miles NE
Portmuck - 6.4 miles NNE
Brown’s Bay - 6.3 miles NNE
Ferris Bay - 6.1 miles NNE
Navigational pictures
These additional images feature in the 'How to get in' section of our detailed view for Greenisland.














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