Section NS is divided in different classes:
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F2 – semi scale boats, built according to plan (not using a kit)
- F2-A – Up to a length of 900mm
- F2-B – longer then 900mm but no longer then 1400mm
- F2-C – longer then 1400mm
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F4 – models built from model kits
- F4-A – rated without technical judgement, only racing at the race track is required
- F4-B – rated according to a technical judgement and according to the performance on the track
- F4-C – models built from plastic kits, rated according to a techical judgement and according to the performance on the track
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F6 / F7 – functional models. Either as a single or as a team event
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F DS – models powered by steam
- F DS-A – Expert class
- F DS-B – Standard class
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F NSS – Sail boats
- F NSS-A
- F NSS-B
- F NSS-C
- F NSS-D