 It also participates in other maritime investigations where British citizens are involved.The Marine Accident Investigation Branch (MAIB) was established in 1989 as a result of a recommendation of the public enquiry into the Herald of Free Enterprise disaster in 1987, when a ro-ro passenger ferry capsized off Zeebrugge, leading to the loss of 193 lives, many of them British citizens.The MAIB is a branch of the United Kingdom Department for Transport which can investigate any accident occurring in UK waters, regardless of the nationality of the vessel(s) involved, and accidents involving UK registered ships worldwide.