At 1329hrs a boat with 4 POB reported an engine problem and requested a tow back to Whakatane.The vessel was at Waiotahi Rocks.Sea conditions were good with a SSW wind of 8-14 kts and a 1m swell.Whakatane Rescue was tasked to assist and at 1440h took the boat in tow.Both boats arrived back in the harbour at 1602hrs.