Staff who work in pubs and restaurants along the river Ouse are being offered potentially lifesaving water safety training.
19-year-old Sonny Ferry from Ketton, near Stamford, was on a night out with friends in York when he fell into the river in April.
- Kate Ferry, Sonny's mum
Five people have died and three have been rescued in the last six months.
The RNLI and North Yorkshire Fire and Rescue Service are teaching people how to use specialist equipment and possibly save a life.