Carbonology · Flatwater trainer
Carbonology Ultra K1
A 5.2 m x 41 cm flatwater racing K1 with a platform seat, under-stern rudder in a countersunk housing, splash lip and cockpit rim for a spray deck, and an optional pump. Front deck 29.5 cm, back deck 25 cm. Can be built in a river layup with an overstern rudder.
- Length
- 5.2 m
- Beam
- 41 cm
- Deck
- 35.4 cm
- Lightest
- 8 kg
Specifications
- Length
- 5.2 m
- Beam
- 41 cm
- Deck height
- 35.4 cm (est.)
- Category
- Flatwater trainer
- Skill level
- advanced
- New price
- A$3,375
Layup weights
On-water profile
Both scores are rated at the hull's own design weight. How these are derived.
Suits: Flatwater racing and marathon, river racing in the down-river build. Not an ocean craft.
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
Gained visibility after the 2017 ICF World Canoe Marathon Championships in Pietermaritzburg; in 2018 Hank McGregor paddled a carbon/bamboo Ultra to a 39:00 flat 10 km time trial in South Africa.
What works, and what it costs you
What works
- Race-proven at ICF marathon level
- Under-stern rudder with a countersunk housing
- Down-river build available off the same hull
Trade-offs
- Not a surfski: needs a spray deck and will swamp without one
- Australian Paddle Sports lists 42 cm beam against the factory’s 41 cm
- Weight class is quoted differently by maker (75-100 kg) and dealer (60-100 kg)
Gallery
Where to buy
Dealers in the markets we have mapped:
Australian Paddle Sports 2026: River build (11 kg) A$3,375, Hybrid (9 kg) A$3,475, Carbon (8 kg) A$4,100, Carbon Wood Inlay (8 kg) A$5,500.
Similar craft
Closest in stability, speed and paddler weight across the whole index.
