The Marine Accident Investigation Branch (MAIB), an independent unit within the Department for Transport, examines and investigates all types of marine accidents to or on board UK vessels worldwide, and all vessels in UK territorial waters. All published MAIB investigation reports to date are available here on the GOV.UK web site. These include the 2001 report on the Marchioness-Bowbelle collision of August 1989. The MAIB was formed in 1989 following the formal investigation into the accident in March 1987 involving the passenger ferry Herald of Free Enterprise. The Herald of Free Enterprise report is also available here.