Katinka II
Lene & John Mathiesen
Copenhagen, Denmark
1972 · Great Dane 28 · hull no. 165
This site is the living record of Aurora: where she is, where she has sailed, what has been repaired and changed, and why this unusually heavy Danish 28-footer was built the way it was.
Great Dane 28 · hull 165 · built 1972
Live / latest known position
AIS is the primary public position source while Aurora is transmitting. Garmin inReach remains useful offshore or whenever terrestrial AIS coverage disappears.
Radio identity
The identifiers are being transferred from Rassvet to Aurora. Public AIS databases may continue to show the previous vessel name until their records catch up.
This boat
The name and ownership history is unusually continuous for a boat of this age. The timeline below is the record I am using for Aurora from her launch to the present.
Lene & John Mathiesen
Copenhagen, Denmark
Jørn & Alena Kragh
Copenhagen, Denmark
Andrei Iatsuk
Kiel, Germany
Maintenance & upgrades
The starting point is the seller’s maintenance record. New work will be added by year rather than disappearing into a vague list of “recent upgrades”.
Voyages
Original GPX tracks are kept intact. The website publishes a simplified copy so detailed Navionics recordings stay fast and readable at passage scale.
Gallery
The gallery is organised by what a photograph documents — overview, underway, deck, rig, interior, service spaces, systems and underwater hull — rather than mixing boat areas with voyage context.
Place camera originals in media/gallery-source/ and run python3 tools/build_gallery.py.
From Ohlson 29 to Great Dane 28
My previous yacht, Ohlson 29 Rassvet, is close in length but belongs to a different branch of Scandinavian design: lighter, wider, fin-keeled and more responsive to wind and helm.
Great Dane should feel slower to accelerate, more reluctant to turn, less satisfying in very light wind and less cooperative in reverse. Tacks reward preserved momentum. Harbour manoeuvres reward planning.
Offshore, those same traits change sign. Four tonnes carry momentum through short sea. A long keel resists yaw. Protected underwater gear reduces exposed appendages. A windvane and tiller pilot can work with a boat that naturally wants to continue on course.
The point is not a bigger yacht, but a platform better aligned with longer solo passages and northern offshore routes.
The Great Dane story
This part of the site is deliberately lower down. It explains why the boat exists, but unlike voyages and refit work it does not change every season.
A Danish Dragon sailor and 1948 Olympic bronze medallist who exported Folkboats, understood the international small-yacht market and drove the production, deck, cockpit, interior and commercial concept of the Great Dane 28.
Ship engineer and designer of Denmark’s celebrated spidsgatter yachts. According to his grandson Jan Utzon, Aage was responsible for the Great Dane’s hull, freeboard, keel and rudder: the part of the boat that meets the sea.
The Nordic Folkboat contributed compact simplicity and fine lines; Utzon’s heavier Sisu spidsgatter contributed ballast, stability and security in rough weather. Great Dane kept the philosophy but adopted a transom stern.
Design philosophy
About four tonnes on 28 ft means slower acceleration in light air, but less abrupt response to short sea and more retained momentum.
At only about 2.5 m wide, Great Dane does not get its character from maximum beam. Roughly 1.8 tonnes of lead sit low in the long keel.
The long keel and protected rudder geometry favour directional stability. The cost is more turning radius and less enthusiasm in reverse.
The narrow hull limits interior volume. That space was not forgotten; it simply was not the first design objective.
Size may limit speed and comfort. It does not necessarily have to limit the sea.
Published design data
Different references quote displacement between about 3.85 and 4.2 tonnes. For practical discussion, this site uses “about 4 tonnes”.
Scandinavian context
Laurin 28 is probably the closest technical relative; Storfidra shares the pocket-offshore philosophy; Vindö 32 and Hallberg-Rassy Monsun show how unusual it is to put nearly four tonnes into only 28 feet.
| Boat | LOA | LWL | Beam | Displ. | Ballast | Draft | Keel | What it explains |
|---|---|---|---|---|---|---|---|---|
| Great Dane 28 | 8.50 | 6.45 | 2.50 | ≈ 4.0 t | 1.80 t | 1.45 | Long | Very heavy and narrow for its length. |
| Laurin 28 | 8.34 | 7.32 | 2.50 | 3.30 t | 1.60 t | 1.35 | Long | Closest geometry and philosophy, but lighter with a longer waterline. |
| Storfidra 25 | 7.60 | 6.30 | 2.40 | 3.10 t | 1.30 t | 1.29 | Long | The Swedish “small boat, big sea” idea in a shorter hull. |
| Vindö 32 | 8.95 | 6.90 | 2.75 | 3.95 t | 1.60 t | 1.30 | Long | Almost the same mass, but in a larger and wider hull. |
| HR Monsun 31 | 9.36 | 7.50 | 2.87 | 4.20 t | 1.90 t | 1.40 | Long | A famous larger heavy cruiser with similar total mass and ballast. |
| Albin Vega | 8.25 | 7.00 | 2.46 | 2.30 t | 0.92 t | 1.17 | Long | Similar length and beam, but a dramatically lighter interpretation. |
Figures are approximate design data used to understand proportions and philosophy, not for certification.
Sources & useful links
Only sources that add something useful to Aurora or the Great Dane 28 story are kept here.