USS Ohio class nuclear-powered submarine in Gibraltar amidst tight security

The Naval Base is busy with a USS Ohio class nuclear-powered submarine sailing in on Sunday evening amidst tight security. 

GBC understands a team of Royal Marines is on the Rock, having arrived on RAF transport planes.

The Ohio–class comprises 14 ballistic missile submarines and four guided missile submarines.

Each measuring 171 metres and dispersing 18,750 tonnes submerged, they are the largest submarines in the US navy.

A 200 metre exclusion zone is in place around the South Mole until further notice.