They also had a secondary school pupil in goal and one at centre back, and their performances are promising for the future of football in Rotorua.
Ngongotaha took the lead in the 27th minute when Sean Kim got on the end of a quality ball from Conor Hinz.
However, Northland struck back on the stroke of halftime, through Johnny Fletcher, before adding two more goals in the second half.
Ngongotaha were unlucky to concede an own goal in the 74th minute and Northland's third came in the 89th minute when Ngongotaha were chasing an equaliser.
With more experienced players expected to return next week, Ngongotaha will be hopeful of picking up a win or two in their remaining games.
Meanwhile, in the Loaded WaiBOP Premiership, Rotorua United lost 3-1 to Matamata.