This is a coastal cut through the middle of Donaghadee Sound that separates the mainland coast from Copeland Island 1-mile northeastward.
The southern approaches to Donaghadee SoundImage: Michael Harpur
This cut is through the marked shipping channel, but it cannot be recommended at times as it is subject to strong tides that can attain rates of up to 4.5 knots in both directions.
Why sail this route?
Cutting between Copeland Island and the mainland coast shortens the distance for those entering and exiting Belfast Lough by about 5 miles. Moreover, taking it with a favourable tidal stream speeds this passage.
Northbound vessel passing Donaghadee HarbourImage: Tourism NI
Conversely, as these currents run in both directions, at the wrong time, a foul tide makes it unviable for vessels that cannot make 10 knots and occasional heavy rips would frustrate the best of vessels. In this case, it would be best to pass outside the islands.
Tidal overview
Today's summary tidal overview for this route as of Sunday, April 12th at 10:41. In Donaghadee Sound, the streams run in about the direction of the channel though their rates vary in different parts of the sound and may be as much as 4½ knots at springs in each direction. The tide turns earlier than in the open sea with the first of the flood sets through Donaghadee Sound and between Copeland islands at a rapid rate. It then sets through in a 130° direction from 04:45 hours after High Water at Dover until 01:15 hours before the following high water. Then it sets in a 310° direction from 1 hour before until 5 hours after High Water, at a rate of about 4.5 knots at springs, or even stronger in places at times.Northwest Stream (ebb)
(HW Dover -0115 to +0445)
Now
(Tidal flow )
Ends in 01:57:31
(Sun 06:39 to 12:39)
Southeast Stream (flood)
(HW Dover +0445 to -0115) 
Starts in 01:57:31
(Sun 12:39 to 19:04)
Love eOceanic? Get Even More with the App!
Unleash the full potential of maritime data with our full suite of resources and the world's most advanced suite of nautical tools.
The app delivers the complete eOceanic advantage, brought to life and perfectly engineered to empower you where it matters most: at sea.
Get the app
Welcome to the eOceanic Application System
What are the navigational notes?
Copeland Island as seen across Donaghadee SoundImage: Michael Harpur
Donaghadee Sound is situated between the south side of Copeland Island and the mainland coast. The southeast entrance of this passage is encumbered with several rocks and there are also hazards on both sides of the Sound off Copeland Island and particularly the Foreland Spit on the mainland. The tidal currents can attain rates of up to 4.5 knots in both directions so this is all in a fast-moving body of water that needs some attention.
The Copeland IslandsImage: © Brian Mason
However, Donaghadee Sound is 1 mile wide. The fairway channel leading through it can almost be described as a straight line, it has no less than 6 metres of water and it is marked by lighted lateral buoys. So, provided tidal streams are favourable, Donaghadee Sound is the normal leisure craft route along this coast.
Tidal planning is however essential because of the strong tidal streams and great care should be taken during the passage. Beware of heavy rips that are caused by the above-described back eddy and shoals in its southeast end. These can amount to overfalls at times that could extend across from Foreland Point to the southeast end of Copeland Island. Particularly so in the constriction close northeast of the Foreland Spit buoy.
The complete course is 2.19 miles from the waypoint 'Northwest Entrance' to 'Southeast Entrance' tending in a south easterly direction (reciprocal north westerly).
Northwest Entrance, 54° 40.445' N, 005° 33.615' W
This is about midway between Copeland Island and the mainland coast.
► Next waypoint: 0.62 miles, course ⇓ 142.55°T (reciprocal ⇑ 322.55°T)
Carn Point, 54° 39.955' N, 005° 32.966' W
In Donaghadee Sound about midway between Carn Point on Copeland Island and Rogers Point on the mainland.
► Next waypoint: 0.48 miles, course ⇓ 126.29°T (reciprocal ⇑ 306.29°T)
Foreland Port Buoy, 54° 39.669' N, 005° 32.293' W
This is about 50 metres northeast of the Foreland Red Can Buoy Fl R 6s.
► Next waypoint: 0.31 miles, course ⇓ 146.13°T (reciprocal ⇑ 326.13°T)
Governor Port Buoy, 54° 39.408' N, 005° 31.990' W
This is about 50 metres northeast of the Governor Red Can Buoy - Fl R 3s.
► Next waypoint: 0.78 miles, course ⇓ 138.56°T (reciprocal ⇑ 318.56°T)
Southeast Entrance, 54° 38.826' N, 005° 31.102' W
The southern approach to the Of Donaghadee Sound shipping channel.

The following are key observations for vessels approaching the listed route through Donaghadee Sound.
Copeland Island and Carn Point (right) as seen from the westImage: Drone across Ireland in 4k
Rid Rock is particularly dangerous during the southeast-going stream that sets on to it. Therefore, vessels approaching Donaghadee Sound from the north are best advised not to cut in and to take the entrance waypoint as described standing well off of Copeland Island.
Briggs North Cardinal buoyImage: Rossographer via CC BY SA 2.0
This inshore eddy or north-going tide is available for half the rising and the whole of the falling tides at Donaghadee. So effectively, a vessel approaching the Sound from southward will from Ballyferris point to Foreland point, can avail of another current quite close in, that runs 9 hours northward, and only 3 hours southward.

Donaghadee Sound is marked by four lateral buoys, port marks off the mainland, and starboard marks off Copeland Island laid out for a northbound passage.
The four lateral marks of Donaghadee SoundImage: Michael Harpur
The first mark, in south-to-north order, is the Donaghadee Sound starboard buoy. This marks the head of a spit with a least depth of 2.7 metres LAT that extends a ½ mile southwestward of Carn Point.
Donaghadee Sound Green Can Buoy - Fl(2)G.6s position: 54° 39.857' N 005° 32.240' W
Foreland Point, nearly ¾ of a mile northward of Donaghadee Light TowerImage: Michael Harpur
The first mark to steer for is the Foreland Red Can Buoy located 2 miles southeast of Orlock Point. This marks the very dangerous hazards off of Foreland Point. Foreland Point, nearly ¾ of a mile northward of Donaghadee Light Tower, is foul, and the rocks, which extend 300 metres off it in a northeasterly direction, dry from 2.4 to 3.3 metres at low water. The outer part is detached and is marked by a conspicuous unlit port perch. About 400 metres northward of the perch is the very dangerous and detached awash Foreland Spit rock. The Foreland Red Can Buoy is moored about 150 metres northward of the Foreland Spit rock.
Foreland Red Can Buoy - Fl R 6s position: 54° 39.640’N, 005° 32.307’W
400 metres southeast of the Foreland Spit rock are the covered Governor Rocks that have 1.9 metres LAT over them. This is then marked by the Governor Red Can Buoy moored 200 metres eastward of the rocks.
Governor Red Can Buoy - Fl R 3s position: 54° 39.360’N, 005° 31.991’W
The principal dangers of this passage for leisure craft are all to the southwest of a line through these two red buoys. So it is essential to keep on the right side of that line.
On the opposite side of the channel are the Deputy Reefs which are nearly midway between Foreland Point and Copeland Island. These consist of three reefs with the least depth of about 2.2 metres LAT. Beyond these are Magic Rocks, three rocks, with from 3.7 to 4.6 metres of water, that are all of small extent. They extend in a line across the channel northward of Deputy Reefs. All of these are marked by the Deputy Starboard buoy moored 150 metres southward of the Deputy Reefs.
Deputy Green Can Buoy - Fl G 2s position: 54° 39.513’N, 005° 31.944’W
Donaghadee Harbour makes an ideal tide location wait for a northbound vesselImage: Michael Harpur
Pass the Foreland buoy on its eastern side and realign to pass west of the Deputy starboard buoy. Continue southeast to pass between the Deputy and Governor buoys. Heavy rips, amounting to overfalls at times, may be experienced in this part of the passage.
Donaghadee Harbour's visitor berthImage: Michael Harpur
Donaghadee Harbour
