Carbonology · Flatwater trainer
Carbonology Feather SOT
A 5.2 m x 35 cm K1-length sit-on-top drawn for downriver racing. A splash lip throws most of the water off and two flexible independent venturis drain the rest, so it needs no spray deck: portages are faster and a swim means climbing back on rather than emptying a boat. Carbonology’s own line on it is blunt — "this is NOT a surfski".
- Length
- 5.2 m
- Beam
- 35 cm
- Deck
- 35.4 cm
- Lightest
- 8 kg
Specifications
- Length
- 5.2 m
- Beam
- 35 cm
- Deck height
- 35.4 cm (est.)
- Category
- Flatwater trainer
- Skill level
- advanced
- New price
- A$2,600
Layup weights
On-water profile
Both scores are rated at the hull's own design weight. How these are derived.
Suits: Downriver and multisport racing where portages and swims are routine. Flatwater training for a paddler who wants K1 speed without a spray deck.
Paddler weight
This hull is built around a paddler of about 100 kg. It stays workable from 88 kg to 106 kg, and sits at its best between 93 kg and 102 kg.
Derived from published hull dimensions and calibrated against manufacturer paddler limits, not taken from a marketing range. The method, in full.
Generations
Listed as "K1 sit-on-top" on the old Carbonology site, shown as coming soon in the 2023 catalogue and now sold as the Feather SOT.
What works, and what it costs you
What works
- Cannot fill with water — no spray deck, fast portages, remount and go
- Genuine K1 speed at 35 cm and 8 kg in the top layup
- Cheapest composite craft Carbonology builds
Trade-offs
- 35 cm of beam — this is a racing hull, not a stable one
- Purpose-built for rivers; the maker explicitly says it is not a surfski
- Venturi drainage is slower than a surfski bailer
Where to buy
Dealers in the markets we have mapped:
Australian Paddle Sports 2026: Glass (12 kg) A$2,600, Hybrid (10.5 kg) A$3,375, Carbon (8.5 kg) A$4,000, Carbon Honeycomb (8 kg) A$4,550.
Similar craft
Closest in stability, speed and paddler weight across the whole index.
