Kelt Cognac Yacht Design 17


Design #17 | Pring 9.75

Here is our contribution to the famous Kelt Cognac Yacht Design Challenge. Our design is still preliminary in some aspects, such as rig details, deck- and interior- layout. Anyway we really wanted to join the contest before closing date.


The backbone for this design is our love for a half-tonner we raced in the seventies, the sturdy little “GRINDE” (designed by Peter Bruun), which performed very well in light as well as really heavy conditions.

This means we wanted a fast, stiff and powerful boat that is easily handled and which have a decent live onboard standard. The style is no-nonsense; we skip all fancy joinery and unnecessary equipment you may find in a modern boat today.

The hull is of medium displacement, which is stretched out as long as possible towards the ends. This gives a very balanced hull form even under strong heel. This hull shape combined with twin rudders eliminates broaching. The full forward sections facilitate hydrodynamic lift.

The hull should be built of Vinylester, E-glas and Divinycell with Kevlar reinforcements in the forward sections ( ice to have there if you hit a container).

The keel blade is of steel. The lead bulb weights 1700 kg. The T-shape was choosen to get the Centre of gravity, Centre of buoyancy and CLR in the optimal positions.

The up-wind sail area is 65 sqm with a non -over lapping jib and “fathead” main, giving a Sa/disp ratio of about 30. A gennaker, 120 sqm, set on a retractable bowsprit (1,8m) will add power when reaching. The mast is a carbon stick, preferably from Marstrom.

One big bunk on either side of the companionway, you will have a nice sleep here with the company of a sail bag. Here is also space for foul weather clothes. To port there is a really large galley and opposite, to starboard, a combined navstation and workbench. The main saloon accommodates huge pilot berths to port and starboard. This is the place to store your belongings in a sailor´s bag, when not sleeping. Below there are quite narrow but comfortable settees/berth on either side. In the forward cabin there is just a toilet and place for light sails. The lack of headroom in this toilet compartment is no problem since you must sit down any way.


Loa 9,75m
Lwl 9,60
Boa 2,96
Bwl 2,42
Draft 2,00
Disp 3200Kg
Ballast 1700
Main 42 sqm
Jib 23
Genn. 120
Sa/disp 30
Electric engine with diesel generator.