26/04/2026
BRITISH WW2 SEA MINE RECOVERED FROM JOHNSTOWN BEACH.
Two weeks ago, Wicklow County Heritage Officer, Deirdre Burns,
contacted Arklow Heritage Museum to say that an unusual object had been discovered on Johnstown Beach, about two miles north of the town. The photo she sent looked suspiciously like the remains of a WW2 sea mine.
Museum chairperson Brendan Dillon, with Brian Dempsey of Arklow
Shipping, investigated and confirmed that it was indeed a mine. A local resident, whose house overlooks the site, has known of it for over fifty years, as it appeared and disappeared with the flow of the sea. It was so embedded in the wet sand that it was obvious that it would not be lost to the next tide.
The Gardaí were informed of this once explosive device, but were satisfied that it was empty and posed no threat. Keeping the county council in the loop, Brendan gathered three more helpers.
As there was no access for machinery from the road, the group of five had to use shovels, ropes, chains and physical strength to make the best of the couple of hours either side of low tide to do the
job. All to no avail.
On the third day, they erected a tripod hoist with a block-and-tackle. This, with continued digging and prising, finally broke the suction seal. The mine was free, but was now in danger of being dragged out by the next tide. It had to be man-handled to above the high- tide mark before nightfall.
As darkness fell and the tide rose, using a large tree trunk lying on the beach as an anchor, the five rigged another block-and-tackle mechanism to drag the mine across the sand until safety was reached. The following day the 7-feet-high bank of clay and undergrowth had to be faced. Behind this was an approximately 200-feet steep slope to the road. No amount of physical strength could surmount these obstacles.
Typical of the local support the museum engenders, Peter Marshall
volunteered a digger and drag-line to get the mine to the road. It was then conveyed to Arklow Engineering Ltd’s shed on North Quay.
Research has shown it to be a British Type 17 sea mine, the same class as the one displayed in front of the Heritage Museum on North Quay. It is remarkably intact and the fact that it is complete
(except for its lethal contents) is evidence that it failed in its purpose to sink a ship during the war.
Several sea mines have been seen in the Arklow area since the1940s. One reputedly washed ashore behind Arklow Pottery, causing the the factory to be evacuated.
Unfortunately, weapons such as this are not consigned to the past. Just think of the mining of the Straits of Hormuz in recent weeks. At least this one is no longer a danger to anyone and, after treatment, will be on display in the museum.