Fleet Diving Group

Fleet Diving Unit 3 is a highly skilled team of divers and mine warfare specialists. Working together, they neutralise underwater threats the world over. 

Fleet Diving Unit 3 are ready to deploy 24/7/365.

The unit is made up of 25 Mine Clearance Divers, plus a small team of Mine Warfare Specialists who operate our Automated Underwater Vehicles.

They travel worldwide to provide a full detect-to-engage Mine Counter-Measures (MCM) service, maritime Explosives Ordnance Disposal (EOD) and underwater force protection.

They also have a unique skill – Mine Investigation and Exploitation, which you can read more about below. 

Facts & figures

Facts & figures


Ready to react

25 personnel

Mine clearance divers


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Our skills

Our skills

Fleet Diving Unit 3 safely identify and neutralise threats underwater. They deploy worldwide in a matter of hours, using unique skills that include:

  • Mine Investigation and Exploitation
  • Detect-to-engage Mine Counter-Measures (MCM)
  • Maritime Explosives Ordnance Disposal (EOD)
  • Underwater force protection

They make sure ships and shipping lanes are safe, and reduce the danger posed to coastal areas by reducing the chance of mines washing up on the shore.

Our operations

Commanding Officer

Lieutenant Commander Keith Mabbott

Lieutenant Commander Keith Mabbott joined the Royal Navy in 1998, he is now in command of the Fleet Diving Group.


Fleet Diving Group's Role

Special skill – Mine Investigation and Exploitation

Mine investigation and exploitation is a highly skilled operation, which sees the team make mines safe in situ, whilst keeping them largely intact ready for investigation. The neutralised threat is lifted from the seabed and towed to a landing site. Ashore, the leading Explosives Ordnance Disposal (EOD) experts and scientists from the Defence Science and Technology Laboratory (Dstl) work together to determine how the mine works and where it came from. This kind of knowledge is invaluable when it comes to making the seas a safer place.

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