The Bombers led by two points at quarter-time after both teams kicked two goals in an even opening quarter.

North got on top in the second with a four-goal-to-one quarter to lead by 21 points at the main break and controlled the contest in the second half, kicking six goals to three to win 12.15 (87) to 6.7 (43).

Brad Cox-Goodyer continued his good form up forward to finish with five goals for the Northern Bombers, with Zach Burt kicking two and singles to Taylor Whitford, Josh Ponting, Mitchell Van Den Berg, Dakota Bannister and Logan Reynolds.

Aaron McNab was Devonport's only multiple goalkicker with two, both coming in the final quarter, but the Magpie forwards were well held by the Bombers' defence all day and found avenues to goal hard to find.

The Northern Bombers dominated the midfield contests, won the clearances and inside 50s and finished with twice as many scoring shots but were inaccurate in front of goal and failed to capitalise on opportunities.

North's brigade of runners were again good, with plenty of ball winners and contributors including Ethan Petterwood and Whitford, who were both outstanding and picked up numerous possessions.

They had good support from the likes of Ponting, Will McBride, Joby Reynolds, Bannister,  Bryton Mullins and Jay Lockhart.

Daniel Roozendaal was dominant in the ruck and gave his crumbers first use of the ball from stoppages.

While happy with the victory which takes his team to a  4-1 record, coach Zane Littlejohn described it as ``an ugly win''.

``Out of our four wins I thought it was our worst if you can have a bad win,'' he said.

``But we got the points and in a way we were favourites to win it and they came out and got the job done, but it was a bit scrappy.''

Littlejohn said his players were good in patches during quarters but did not adapt to the wet conditions very well.

``We put some things in place during the week to try and stretch Devonport, and that didn't happen because of the conditions today.

``We tried to play dry weather footy in wet weather to start with and it wasn't working, but we changed up and adjusted eventually, and in the end we got the result we wanted.''

The Bombers decided not to risk Allan O'Sign for a return from a hamstring injury and lost Damien Medwin to a hamstring strain and Logan Reynolds to a hand injury during the game.

Kade Pitchford, Billy Sharman, Brodie Deverell, Brad Symmons and Nathan Robertson were among the better contributors for the Magpies.