Three men are shaken up after their boat capsized in Banks Peninsula near Christchurch

Coastguard, Police and a rescue helicopter sprang into action after a boat's engine failed, washing those onboard onto rocks at Little Akaloa Heads yesterday afternoon.

The two men were rescued off the rocks and the helicopter winched a third person.

Coastguard Sumner says it's a good reminder to make sure your boat is in good working order, and you're experienced for the conditions you're going out in.