This one was one i thought about , then i thought jezz was it
really that long ago ..
Marchioness disaster occurred on the River Thames in London, in the early hours of 20 August 1989. The pleasure boat Marchioness sank after being run down by the dredger Bowbelle, near Cannon Street Railway Bridge. There were 131 people on the Marchioness crewing, waiting and attending a private birthday party; fifty-one of them drowned.