Lack of preparation left a deck officer "overloaded" as a Seatruck Ferries ro-ro grounded in fog off Scotland last year.
The 1,057-lane-metre Arrow (built 1998) was holed while entering Aberdeen harbour on 25 June 2020, the UK Marine Accident Investigation Branch (MAIB) said.
There were no injuries or pollution, and the vessel was successfully refloated 45 minutes later.
