because of 3 extremely aggressive stowaways on board. They’ve been found reportedly, on Feb 7, and shortly after, their violent behavior disrupted crew activities and demanded immediate enforcement response.
Tanker was boarded by Spanish Immigration Police officers, who took situation under control and stayed on board throughout Feb 7-8 night, because tankers can dock at Vigo only during daytime, and therefore, HARALD MAERSK had to spend the night at sea.
Tanker berthed at Vigo in the morning Feb 8, and as of 0500 UTC Feb 9, was still berthed, investigation under way.
Vigo Police have some doubts about the whole story – Police said, that merchant ships are often ordered by owners to simulate dangerous situation on board after finding stowaways, in order to get rid of them, and all costs and troubles they bring.