Insuring C.N.S.O.: cover and premium
sailing boats and sailing yachts · several countries
C.N.S.O. (Aikido): french builder of cruising sailing yachts. NAMMERT insures a C.N.S.O. regardless of year built or where you bought it, liability, hull, legal expenses and personal accident cover from one house, taken out online in five minutes.
At a glance
Origin
several countries
Class
sailing boats and sailing yachts
Typical sizes
5,8 to 16 m
Premium from
from €39 a year for liability
Worth knowing
C.N.S.O.; cover, cost and conditions
C.N.S.O. (Aikido) is short for Constructions Nautiques du Sud-Ouest, a French yard set up by the Austrian Otto Tiefenbach. The company was registered in Agen and built its boats in the Laville industrial zone at Bon-Encontre in Lot-et-Garonne, a long way inland. Hulls were laid up in polyester, the Saké for example in solid single-skin laminate, and the yard promoted itself with the idea of making the sea accessible to everyone. Its yachts became known as sturdy cruising boats rather than racers. The model names give the brand away at once: Mikado, Shogun, Samurai, Kendo, Geisha and Saké are almost all borrowed from Japanese. The yard has since closed its doors.
Our model records hold 17 designs, eleven sailing yachts and six smaller sailing boats, built between 1962 and 2000. None of them reaches into recent build years. The Shellfish of 8.75 metres opens the list in 1962, and the sixties brought the Super Dorade, Lotus, Samurai, Karaté, Geisha and Aikido. The Geisha is the smallest at 5.75 metres, and eight designs stay below eight metres. At the top sit the Kendo at 12.9 metres, the Mikado at 14.9 metres and the Mikado 16 m, the only design recorded right up to 2000. In between come the Shogun at 10.8 metres, the Kyudo and the Super Daimio.
Every C.N.S.O. (Aikido) still sailing is a classic glassfibre boat, and a proper survey before purchase pays off. Solid laminate of that era is thick, yet osmosis, soft spots around deck fittings and tired chainplates are the usual points to check. Standing rigging of unknown age is better replaced than trusted. The Mikado was conceived for long passages as a ketch or schooner, so tanks, engine hours, sails and the condition of both masts deserve a careful look. The smaller Samurai, Saké and Daimio suit coastal cruising with a family crew, and on these boats the state of the rudder, the keel bolts and the cabin joinery tells a lot about past care.
Questions and answers
Frequent questions
Which C.N.S.O. design is the largest?
For C.N.S.O.: The Mikado 16 m at 16 metres, listed in our model records from 1970 to 2000.
Next come the Mikado at 14.9 metres and the Kendo at 12.9 metres.
Which is the oldest C.N.S.O. design in the records?
For C.N.S.O.: The Shellfish, an 8.75 metre sailing yacht listed from 1962 to 1975.
The Super Dorade followed from 1964, the Lotus and the Samurai from 1965.
The cover that fits
sailing yacht insurance
Tariffs, cover and FAQ for sailing yacht insurance in detail.
Third-party liability
The foundation for a boat from C.N.S.O.: damage to third parties, worldwide,
from €39 a year for liability.
Hull cover
Partial or full hull cover for a C.N.S.O., at replacement value with an agreed fixed value.
For the whole class of boat
For C.N.S.O.: What matters for sailing boats and sailing yachts is the same across every brand;
engine output, how a claim is settled, cruising range and theft protection.
The class page lists every point and every brand in this class, C.N.S.O.
included.
Insuring sailing boats and sailing yachts, every brand and every condition
Other builders in this class
Nautical information What counts before you cast off, papers, equipment, waters
Licence
A powerboat licence (inland or coastal) is required from 15 hp (11.03 kW).
Registration
Registration from 3 hp; for trips abroad carry the boat certificate or flag document.
Waters
Inland, coastal and abroad; plan fairways, bridge clearances, draught and tides.
Equipment
Lifesaving gear, fire extinguisher, anchor, signalling equipment and correct navigation lights.
Cruising range
The agreed cruising range is stated in the policy and can be extended at any time.
Weather
Check wind force in Beaufort and wind direction before casting off, and allow for gusts.
General guidance, not a complete account;
what governs are the rules of the waters you are on and the manual of your C.N.S.O..
Current wind force and direction for your waters are shown on the Home.
Series by C.N.S.O., build years and cover
Mikado 16 m is a sailing yacht from C.N.S.O., built from 1970 to 2000.
Mikado is a sailing yacht from C.N.S.O., built from 1971 to 1989.
Daimio is a sailing boat from C.N.S.O., built from 1970 to 1988.
Shogun is a sailing yacht from C.N.S.O., built from 1977 to 1988.
Karaté is a sailing yacht from C.N.S.O., built from 1966 to 1987.
Kendo is a sailing yacht from C.N.S.O., built from 1975 to 1987.
Jidzo is a sailing boat from C.N.S.O., built from 1975 to 1986.
Super Daimio is a sailing yacht from C.N.S.O., built from 1972 to 1986.
Samurai is a sailing boat from C.N.S.O., built from 1965 to 1984.
Kyudo is a sailing yacht from C.N.S.O., built from 1976 to 1983.
Lotus is a sailing yacht from C.N.S.O., built from 1965 to 1981.
Saké is a sailing boat from C.N.S.O., built from 1970 to 1980.
Aikido is a sailing yacht from C.N.S.O., built from 1967 to 1979.
Lotus-M-II is a sailing yacht from C.N.S.O., built from 1970 to 1978.
Geisha is a sailing boat from C.N.S.O., built from 1967 to 1977.
Super Dorade is a sailing boat from C.N.S.O., built from 1964 to 1976.
Shellfish is a sailing yacht from C.N.S.O., built from 1962 to 1975.
For the Mikado 16 m, Mikado, Daimio by C.N.S.O.
and 14 more series there is no list price left.
That is why we work with an agreed value: you state the figure, we agree it,
and in a total loss exactly that amount is paid, with no deduction for wear.
For the Mikado 16 m, Mikado, Shogun by C.N.S.O.
and further series: On sailing yachts the rig and the underwater hull are the expensive parts:
a dismasting quickly costs a quarter of the boat,
and osmosis counts as wear and is covered by no hull policy.
For the Daimio, Jidzo, Samurai by C.N.S.O.
and further series: On boats this size the condition of rig and fittings decides.
A dismasting is covered, worn terminals after years are not.
The C.N.S.O. range in figures
These figures come from the model records we keep for C.N.S.O.: boat type, build years and length,
nothing estimated.
- sailing yacht
- 11 models, 1962 to 2000, mostly 7.6 to 14.9 m
- sailing boat
- 6 models, 1964 to 1988, 5.8 to 7.4 m
Which model was built when?
What does a used C.N.S.O. cost?
We hold today’s price ranges by year for 14 models by C.N.S.O..
The table shows what boats in average condition are worth,
from the oldest to the youngest year on record.
Choose your exact model, year and condition in the calculator.
| Model | Years built | Range today |
|---|---|---|
| Aikido | 1970 to 1976 | €13,100 to €17,000 |
| Daimio | 1973 to 1985 | €6,800 to €10,000 |
| Geisha | 1970 to 1974 | €3,500 to €4,500 |
| Jidzo | 1978 to 1983 | €5,200 to €7,400 |
| Karaté | 1969 to 1984 | €20,100 to €28,900 |
| Kendo | 1978 to 1984 | €61,600 to €86,400 |
| Kyudo | 1979 to 1980 | €7,900 to €10,500 |
| Lotus | 1968 to 1978 | €6,500 to €8,400 |
| Lotus-M-II | 1973 to 1975 | €6,700 to €8,500 |
| Mikado | 1974 to 1986 | €115,800 to €154,200 |
| Saké | 1973 to 1977 | €7,000 to €9,000 |
| Samurai | 1968 to 1981 | €7,500 to €10,200 |
| Shogun | 1980 to 1985 | €30,800 to €43,600 |
| Super Daimio | 1975 to 1983 | €8,200 to €11,900 |
Estimate from our boat records, October 2026.
Not a survey.
C.N.S.O. insured in five minutes.
Boat type, year built, length and value of your C.N.S.O.
are all we need.
Work out the premium online or call us: +49 3375 29 12 77.
