Victoria Milligan's safety 'kill cord' plea after speedboat deaths
20 June 2014 Last updated at 09:35 BST
Last May, Victoria Milligan was spending the Bank Holiday in Cornwall with her family when their trip turned to tragedy.
They were thrown from their speed boat, and Victoria's husband and eight-year-old daughter were killed.
She lost her leg and her other three children were badly injured, but survived.
She is now hoping to raise more than £300,000 for the RNLI and Child Bereavement UK in a charity cycle ride starting in Cornwall.
In her first television interview, Mrs Milligan spoke to BBC Breakfast's Jon Kay.