Pirates vice-captain right-wing Mosese Bulicakau kicked a penalty goal and fullback Isimeli Yavala scored a try on halftime for Pirates.
The score at the break was 36-8 to Tapuae.
Manuel-Harman said Tapuae set a quick tempo, with first-five Nikau Kaimoana and blindside flanker Antonio Marewai among their best.Marewai made a number of strong carries.
Fetcher Paula Tatafu was tremendous in defence for Pirates, and centre Alifereti Senivou was just as prominent with the ball in hand.
Head coach Anthony Kiwara, was justifiably pleased with his courageous side’s showing.
“Our discipline continues to improve by the week. Our pack scrummaged well and, with the ball in hand, we played with excellent shape.”