This naval action was a result of claiming the territory and losses from the previous incident.

In the previous incident both firms were to arrive with 50 supporters each ready for combat.

They then completed a brief questionnaire about the previous incident between the intruder and lecturer that they witnessed the week earlier.

It was the third time that a lorry travelling on an open wagon had caught fire, the previous incidents being in 1996 and 2006.

It also noted that both ferries had been involved in previous collisions, a previous incident report had been published a decade earlier but its recommendations had not been implemented.