Durban Surf's Tatum Botha predictably won the overall title in the U14 female division. Clifton's Noar Lombard won the U14 male overall title.
(Tatum) Botha, daughter of former national champion and South African international Dylan Botha, was the outstanding individual in all three days of competition.
Botha, brilliant for Durban Surf at the recent Kwazulu-Natal Provincial Championships, was as imposing and impressive in dealing with the national challenge.
Botha, strong in every discipline, savoured her first place in Iron Nipper, which is considered toughest among the many event categories.
Botha's champion effort completed a remarkable last few months, in which she won two Interprovincail Surf Lifesaving Titles and four South African Open Water Lifesaving titles.
She also earlier in the week won the U14 Run/Swim/Run and on Wednesday continued her dominance in the U14s with a comfortable win in the Board final.
Fish Hoek's Leah Winter was named female U13 overall competitor of the Nippers National Championship and East London's Jordan Fenn took the honours in the overall male u13 category.
Durban Surf's Tannah Smith also enjoyed a very successful National Championship, and in 2018 the weather played its part to ensure Durban Surf could officially be crowned champions.
A year ago, at the very same King's Beach in Port Elizabeth, inclement weather and dangerous surf prematurely ended the 2017 General Tire National Championships. Durban Surf had started well a year ago but not enough category events were completed to determine an overall club winner.
Durban Surf, the most celebrated provincial and national club title winners in the last five years, in 2017 had to be content with claiming a moral victory. This time there was tangible to the boast that the club's Nipper elite, collectively, are the best in the country.
Durban Surf, with a combined 475 points, were comfortable champions. Fish Hoek was second with 384 points and Umhlanga Rocks took third.
Plett, of the Eastern Cape clubs, placed highest in fourth, with Summerstand seventh and hosts Kings Beach eight among the Nippers.
Umhlanga's Matthew Coetzer won the Boys' U13 Board final, Kira Ribbink defended her National Age Group U14 Flags title and Llandudno's James Davis Borston claimed three category title victories.
Davis Borston upstaged favourite Naor Lombard (Clifton) in the U14 Board Final and also won the Flags.