Nuclear-powered submarine in near-miss with Stena ferry in Irish Sea
Royal Navy submarine nearly hit the Belfast-Stranraer ferry while at ‘periscope depth’
An armed guard on Astute-class nuclear submarine HMS Artful in 2016. The Royal Navy has not released information identifying which submarine was involved in the near-miss. Photograph: Andy Buchanan/AFP/Getty Images
A nuclear-powered Royal Navy submarine has been involved in a near-miss with a ferry in the Irish Sea.
An investigation has been launched into the incident, which occurred on November 6th.
It has a capacity for 1,300 passengers and 660 cars.
The submarine was submerged at the depth needed to extend its periscope above the surface of the water.
The Royal Navy would not confirm which of its 10 submarines was involved.
They are all nuclear-powered but only four carry Trident nuclear missiles.
A spokesman for the Marine Accident Investigation Branch (MAIB) said: “In November, we were notified of a close-quarters incident between the ro-ro [roll-on/roll-off] ferry Stena Superfast VII and a submarine operating at periscope depth.
“We have carried out a preliminary assessment of the evidence in this case and the Chief Inspector of Marine Accidents has decided to open a safety investigation.
“The investigation is being conducted with the full co-operation of the Royal Navy. A report will be published when our investigation has concluded.”
A navy spokesman said: “We can confirm the sighting of a Royal Navy submarine between Belfast and Stranraer on November 6th, 2018. We are co-operating with the MAIB’s investigation.”
A spokesman for Stena said: “Stena Line can confirm that on Tuesday November 6th, 2018, Stena Superfast VII and a submerged submarine came into close proximity during a scheduled crossing between Cairnryan and Belfast.
“At no stage were the vessel, passengers or crew in any danger. The incident is now under investigation by the MAIB and we will of course co-operate fully in this.” – Press Association