Review of Kitt 25

Kitt 25
Kitt 25 anno 1978.

Basic specs.

sail specifications
The Kitt 25 is a small motorsailer designed by the Danish maritime architect Palle Mortensen in the early seventies. The Kitt 25 is built by the Danish yard Bachs Glasfiber ApS.

Looking for a new boat? Find a Kitt 25 or similar boat for sale

Both the hull and the deck is made of fibreglass. Generally, a hull made of fibreglass requires only a minimum of maintenance during the sailing season. And outside the sailing season, just bottom cleaning and perhaps anti-fouling painting once a year - a few hours of work, that's all.
The deck is a double deck which improves the indoor climate.

The boat is equipped with 2 cabins, 4 - 6 berths, a galley and toilet facility.
Note: the boat has also been sold to be self-made/-interiored, which means that the quality of each boat may vary.

Keel of Kitt 25.

Kitt 25 is typically equipped with a Volvo Penta engine at 25.0 hp (18 kW), which gives a max speed about 8.2 knots.
The fuel tank has a capacity of 80 liters (21 US gallons, 17 imperial gallons).

Sailing characteristics

This section covers widely used rules of thumb to describe the sailing characteristics. Please note that even though the calculations are correct, the interpretation of the results might not be valid for extreme boats.

Stability and Safety
What is Capsize Screening Formula (CSF)?
The capsize screening value for Kitt 25 is 1.93, indicating that this boat could - if evaluated by this formula alone - be accepted to participate in ocean races.

Theoretical Maximum Hull Speed
What is Theoretical Maximum Hull Speed?
The theoretical maximal speed of a displacement boat of this length is 6.3 knots. The term "Theoretical Maximum Hull Speed" is widely used even though a boat can sail faster. The term shall be interpreted as above the theoretical speed a great additional power is necessary for a small gain in speed.

Immersion rate
The immersion rate is defined as the weight required to sink the boat a certain level. The immersion rate for Kitt 25 is about 111 kg/cm, alternatively 625 lbs/inch.
Meaning: if you load 111 kg cargo on the boat then it will sink 1 cm. Alternatively, if you load 625 lbs cargo on the boat it will sink 1 inch.

Sailing statistics

This section is statistical comparison with similar boats of the same category. The basis of the following statistical computations is our unique database with more than 26,000 different boat types and 350,000 data points.

Motion Comfort Ratio
What is Motion Comfort Ratio (MCR)?
The Motion Comfort Ratio for Kitt 25 is 19.2.

Low High 62% 0 50 100
Comparing this ratio with similar sailboats show that it is more comfortable than 62% of all similar sailboat designs. This comfort value is just above average.

L/B (Length Beam Ratio)
What is L/B (Length Beam Ratio)?
The l/b ratio for Kitt 25 is 3.08.

Wide Slim 66% 0 50 100
Compared with other similar sailboats it is slimmer than 66% of all other designs. It seems that the designer has chosen a slightly more speedy hull design.

D/L (Displacement Length Ratio)
What is Displacement Length Ratio?
The DL-ratio for Kitt 25 is 186 which categorizes this boat among 'light racers'.

Heavy Light 66% 0 50 100
66% of all similar sailboat designs are categorized as heavier. A light displacement requires less sailarea and has higher accellerations.

SA/D (Sail Area Displacement ratio)
SA/D (Sail Area Displacement ratio)
Indicates how fast the boat is in light wind:
- Cruising Boats have ratios 10-15
- Cruiser-Racers have ratios 16-20
- Racers have ratios above 20
- High-Performance Racers have ratios above 24
Sail-area/displacement ratio (SA/D ratio): 13.95

RSP (Relative Speed Performance)
What is Relative Speed Performance?
The Relative Speed Performance for Kitt 25 is 5

Slow Fast 5% 0 50 100
The relative speed performance is 5 which means that a it is faster than 5% of all similar sailboat designs. As this boat is a motor sailer, it is expected that the performance of a motor sailer for sail alone is lower than a dedicated sailboat.


If you need to renew parts of your running rig and is not quite sure of the dimensions, you may find the estimates computed below useful.

Guiding dimensions of running rig
Jib sheet 7.5 m(24.8 feet)10 mm(3/8 inch)
Genoa sheet7.5 m(24.8 feet)10 mm(3/8 inch)
Mainsheet 18.9 m(61.9 feet)10 mm(3/8 inch)
Spinnaker sheet16.6 m(54.5 feet)10 mm(3/8 inch)

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