UK Nuclear Sub Dinged in Collision With Merchant Vessel

A picture taken on July 21, 2016 shows the nuclear submarine HMS Ambush moored in the port of Gibraltar during an unscheduled stop due to a sustained damage to its conning tower after hitting a vessel. The HMS Ambush submarine was submerged and carrying out a training exercise in Gibraltar waters when it collided with the vessel on July 20, 2016 afternoon, damaging the front of its conning tower. / AFP / afp / JORGE GUERRERO (Photo credit should read JORGE GUERRERO/AFP/Getty Images)

LONDON — One of the Royal Navy’s newest nuclear submarines has collided with a merchant vessel off the coast of Gibraltar.

The collision took place while HMS Ambush was submerged during a training exercise July 20, the Royal Navy said in a statement.

The accident resulted in damage to the front of  nuclear attack submarine’s conning tower after what the sea service described as a “glancing collision” with a merchant vessel.

The Royal Navy said that there was no damage to the boat’s nuclear power plant. The merchant ship showed no signs of damage.

The Astute-class submarine, which has the motto “Hide and Seek,” has entered the dockyard at the British overseas territory for further checks.

Ambush was commissioned in 2013 at a cost of around £1.1 billion, or US $1.45 billion. It’s  the second of what will eventually be seven Astute-class submarines being built for the Royal Navy by BAE Systems.

The third boat, HMS Artful, entered service earlier this year.