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Dundrum Harbour

Your Comments: 4 Read or add your comments

Courtesy Flag

Flag, Red Ensign


54°13.35N 005° 48.4W This is within D401 but it is impossible to get into Dundrum without infringing this Danger Area.


AC 044-0 Nose of Howth to Ballyquintin point. Imray C62 Irish Sea

Rules & Regulations

D401 is used for small arms up to Mortar and Anti Tank weapons and the seaward side of it is essentially a safety area for “over throws”. When the range is active they fly Red Flags by day and red lights by night. The presence of these flags does not prohibit passage through the danger area. The authorities can expect that you will not linger in the area and they operate on the “Clear Range” principle. Range control is not contactable either by phone or VHF but, if you need to cross the range and the red flags are being flown, call Belfast Coastguard on #16 and they can contact the RSO.


Drying and awash rocks, see "Approach and Entry"

Tidal Data Times & Range

HW is HW Belfast +0005 MHWS 4.8m MHWN 3.8m MLWN 1.8m MLWS 0.8m The streams into and out of the lagoon and in the anchorage are quite strong but unspecified.

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General Description

Dundrum harbour lies in a lagoon approached through a narrow channel with a sand bar at the seaward end. ... read more


Between the entrance to Dundrum channel and St John’s Point, all the way round.... ... read more

Berthing, Mooring & Anchoring

If you need to take on water, fuel of other stores it is possible..... ... read more

Your Ratings & Comments

Update July 2022
Written by Don Thomson 3 | 6th Sep 2022
No changes
Update Early Summer 2021
Written by Don Thomson 3 | 24th Jun 2021
No changes
Written by Don Thomson | 6th Apr 2017
These notes were updated by Don in April 2017. No changes were made
Update 2015
Written by dononshytalk | 20th Mar 2015
These notes were reviewed by Don in March 2015. No changes.
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