What is the route?
Why sail this route?This provides a useful set of waypoints to approach and pass down the north end of Lough Swilly as far as Fahan and/or enter the marina.
Tidal overviewToday's summary tidal overview for this route as of Saturday, April 10th at 20:47. Lough Swilly's tidal streams are scarcely perceptible at the entrance. They build progressively southward and can attain a spring rate of 1½ to 1¾ kn off Rathmullan Pier. High water for Lough Swilly is HW –0500 Dover, +0110 Galway, mean level 2.3 metres with a duration 0605. Allowing it is about 12 miles with a favourable stream to the 'Inch Spit' buoy the ideal time to enter for a boat capable of 5 knots and intending on visiting Fahan Marina would be two hours after the in-going stream commences or earlier with a tide wait.
Lough Swilly Out-Going Tidal Stream
(HW Londonderry -0210 to +0415)
(Tidal flow )
Ends in 04:27:53
(Sat 18:50 to 01:15)
Lough Swilly In-Going Tidal Stream
(HW Londonderry +0415 to -0210)
Starts in 04:27:53
(Sun 01:15 to 07:15)
What are the navigational notes?
Dunree Head, 55° 11.640' N, 007° 34.360' W
Dunree Head, situated 5 miles within the Lough and marked by a lighthouse, is where the lough narrows gradually to a width of about 1 mile.
► Next waypoint: 4.52 miles, course ⇓ 140.12°T (reciprocal ⇑ 320.12°T)
Buncrana, 55° 8.170' N, 007° 29.290' W
At Buncrana the course of the lough bends southwestward.
► Next waypoint: 1.36 miles, course ⇓ 187.72°T (reciprocal ⇑ 7.72°T)
'Inch Spit' buoy, 55° 6.820' N, 007° 29.610' W
This is in the vicinity of the ''Inch Spit' port buoy, Fl.R3s, situated 1¼ miles southwest of the pierhead at Buncrana. This marks the Inch Spit that dries.
► Next waypoint: 0.54 miles, course ⇓ 168.41°T (reciprocal ⇑ 348.41°T)
Fahan Channel 1, 55° 6.290' N, 007° 29.420' W
Fahan Bar – least depths occur between Fahan Channel 1 & 2.
► Next waypoint: 0.14 miles, course ⇓ 199.40°T (reciprocal ⇑ 19.40°T)