Boaties were asked to check their vessels are fit for the water and to stay with them when in difficulty, following a rescue on the Waikato River.
Hamilton police Senior Sergeant Andy Bu Bear said police and the fire service were called to the river just after 11am yesterday, after receiving calls from the public about a man in difficulty in the water.
"It turned out a man had been out on a wooden dingy with his two children when his outboard motor stopped.
"Dropping his anchor to hold the boat in place, the man has tried to then swim a rope to shore to bring the boat and his children ashore but has got into difficulty and was reported by members of the public calling 111 to be crying out for help in the water."
Mr Bu Bear said when the man realised he was in difficulty he was unable to get back into the boat because of the current.