For the first time, a robot boat delivered supplies to a Royal Navy warship on operations, currently based in Bahrain.
The unmanned jet boat has been used by the US Navy to hunt mines, lowering sonar into the water and patrolling a pre-planned area of ocean, looking for suspicious objects on or tethered to the seabed.
It can transport supplies which can be lifted by a human being.
The aim is to resupply ships, so sailors do not have to cease operations.
It would also not endanger crews who would normally be tasked with transporting supplies.
Trials and tests are ongoing, with the goal of the crewless craft being able to deliver heavier goods.
The successful trials with Bangor – which delivered vital supplies for her Seafox robot submersible to the ship to allow her crew to identify and neutralise mock mines – were carried out during the latest joint US-UK workout in the Middle East.
HMS Bangor’s Commanding Officer Lieutenant Commander Rob Couzens said: ‘The idea is that a minehunter will be able to be in the middle of a minefield hunting mines and that it wouldn’t need to break task to go to replenish – it would be able to be sent stores autonomously towards its position, maintaining mine hunting operations.
Divers were also used to remove devices.
After a 10-day exercise, the crew recovered 17 drill mines.