Port Adelaide have announced Tom Jonas and Ollie Wines as co-captains for the 2019 season.

The pair replace Travis Boak, who stood down from the role at the end of the 2018 season and become the first joint captains in Port's 149-year history.

Hamish Hartlett was named vice-captain and will join the pair in a three-man leadership group.

Power coach Ken Hinkley told the club site he is proud of the development of the trio.

โ€œTom and Ollie have respective skill sets that will complement each other perfectly both on and off the field. We are working in a modern environment and the age difference between Tom and Ollie will serve us well in connecting the entire playing group,โ€ Hinkley told the Port Adelaide website.ย 

โ€œTomโ€™s is such a great story. He was recruited as a dour, lock-down rookie-listed defender at the end of 2010. He debuted against Hawthorn at the MCG during a difficult time for the club and tagged Hawthorn champion Luke Hodge, keeping him to a handful of touches. Since that time Tom has gone from the rookie list, to the senior list and is now a captain of this great club.

โ€œAs for Ollie, it was clear from the day he arrived at Alberton he would one day be a key leader at our club. He trains hard, is the ultimate professional and forever leads from the front both on and off the field. Ollie demonstrated his loyalty and care for this club last year when he committed long-term to Port Adelaide at a time when he could have easily gone to any other club in the competition,"Hinkley said.

โ€œAnd then of course thereโ€™s Hamish who thoroughly deserves his appointment as vice-captain. Heโ€™s the ultimate team man who would literally bleed for his club and his teammates."

Jonas and Wines will break Port Adelaide tradition by keeping their respective playing numbers instead of switching to number one.