The fishing vessel had not activated its Automatic Identification System
The UK Marine Accident Investigation Branch (MAIB) issued the report of its investigation of the collision between a container ship and a fishing vessel south of Start Point, English Channel on 11 February 2011.
The container ship’s bridge team was unaware of the presence of the fishing vessel until shortly before the collision and then did not take effective action. The fishing vessel had not activated its Automatic Identification System (AIS).
You can view the report by clicking here.
Source: UK MAIB
