It was a maiden crown for Tasman, who were beaten finalists in January but managed to go one better with an impressive two days of sevens.
Their opposites got across the line in the second spell, but Tasman showed their grit to hold on for the title.
Earlier in the day Tasman downed North Harbour 33-7 in the semi final and were too strong for Taranaki in the quarters. They went through pool play unbeaten.
The Marlborough Union won the inaugural National Sevens tournament in 1975 but this is the first title for the Mako since the amalgamation of Nelson and Marlborough in 2006.
They’ve done it! Manawatu have won their fifth @NationalSevens title! Hear from skipper Selica Winiata following the victory in Tauranga.#National7s pic.twitter.com/o5N3WHknRn— Black Ferns (@BlackFerns) December 16, 2018
In the women’s Final it was familiar scenes as Manawatu once again lifted the trophy, claiming their fifth National Sevens crown.
They faced Waikato in the Final and opened the scoring through captain Selica Winiata. Waikato hit back to take a 7-5 before Manawatu crossed to take a 12-7 half time lead.
Waikato were on attack for long periods in the second half but Manawatu held on for the victory.
The team was dominant on Day Two, cruising through their quarter final 21-0 over Counties Manukau and 31-5 over Bay of Plenty in the semi finals.
Black Ferns Sevens captain Sarah Goss was awarded the Anna Richards Cup for Player of the Tournament.
In other Finals the Taranaki men and Canterbury women won their respective Plate Finals, while the Auckland men and Tasman women claimed the Bowl trophies.
For full results, click here.
Introducing your Men’s @NationalSevens winners for 2018, Tasman! #National7s pic.twitter.com/KStPdua8xA— All Blacks Sevens (@AllBlacks7s) December 16, 2018