At 0636 on 4 August 2018, the UK registered container vessel NAME_1 NAME_2 and the Italian registered gas carrier NAME_3 collided 4 nautical miles south-east of Europa Point, Gibraltar. Both vessels were damaged but there was no pollution or injury.
The collision occurred in darkness, dense fog and in an area of heavy shipping traffic.
NAME_1 NAME_2 was stopped, having been given direction by Algeciras Pilots to wait outside Gibraltar Bay. NAME_3 was making way towards a boat transfer position inside Gibraltar Bay.

Where did the accident happen?