Water Police impounded a man's jet ski following an incident in Seaholme yesterday.
The incident occurred when a jet ski allegedly engaged in dangerous activity near the Altona boat ramp about 10.30am.
It is alleged the 35-year-old man intentionally sprayed the occupants of a recreational boat using the jet ski's engine wash and fled at a high speed.
All four occupants of the boat, including a young baby, were physically uninjured.
The Deer Park man was located by police and will be charged at a later date with dangerous operation of a vessel and assault offences.
The jet ski is subject to a prohibition notice and will be impounded for 48 hours until the notice is removed by police.
Water Police Sergeant David McHenry said police will be operating covertly from beaches and lakes all over Victoria this summer.
"Police are working hard to ensure everyone can safely enjoy the water this season and will not tolerate disruptive behaviour," Sgt McHenry said.
"Operators of any recreational vessel, including jet skis, are subject to impound if found operating in a dangerous manner."
