Review of Drabant 24

Drabant 24
Drabant 24 anno 1980. Note the window with the rounded corners that characterize the later versions.

Basic specs.

sail specifications
The Drabant 24 is a sailboat designed by the Danish maritime architect Gert Gerlach in the early seventies. A few hundred boats have been produced. The Drabant 24 is built by the Danish yard Gesten Glasfiber Bådeværft.

Looking for a new boat? Find a Drabant 24 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 boat is equipped with one cabin, 4 berths and a galley.
Note: the boat has also been sold to be self-made/-interiored, which means that the quality of each boat may vary.

The boat equipped with a masthead rig. The advantage of a masthead rig is its simplicity and the fact that a given sail area - compared with a fractional rig - can be carried lower and thus with less heeling moment.

Keel of Drabant 24 anno 1980. Ready for fouling
The Drabant 24 is equipped with a finn keel. A boat with a fin keel is more manoeuvrable but has less directional stability than a similar boat with a long keel.
The keel is made of iron. Many people prefer lead keel in favour of iron. The main argument is that lead is much heavier than iron and a lead keel can therefore be made smaller which again result in less wet surface, i.e. less drag. In fact iron is quite heavy, just 30% less heavy than lead, so the advantage of a lead keel is often overstated. As the surface of a finn type keel is just a fraction of the total wet surface, the difference between an iron keel and a lead keel can in reality be ignored for cruising yachts. Drabant 24 can enter even shallow marinas as the draft is just about 1.35 - 1.45 meter (4.43 - 4.73 ft) dependent on the load. See immersion rate below.

An outboard motor is often used on this boat. In that case the boat will typically require a power of 4 - 5 hp, alternatively 93 - 111 lbs thrust if you prefer an electrical motor. Electric outboards are becoming popular for sailboat owners who want clean instant power with less noise and no exhaust fumes.

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 Drabant 24 is 1.99, 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 Drabant 24 is about 114 kg/cm, alternatively 640 lbs/inch.
Meaning: if you load 114 kg cargo on the boat then it will sink 1 cm. Alternatively, if you load 640 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 Drabant 24 is 18.6.

Low High 58% 0 50 100
Comparing this ratio with similar sailboats show that it is more comfortable than 58% 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 Drabant 24 is 2.95.

Slim Wide 50% 0 50 100
Compared with other similar sailboats it is more spacy than 50% of all other designs. It seems that the designer has chosen an average hull design.

Ballast Ratio
What is a Ballast Ratio?
The ballast ratio for Drabant 24 is 44%.

Low High 69% 0 50 100
This ballast ratio shows a righting moment that is higher than 69% of all similar sailboat designs. A righting moment (ability to resist heeling) just above average.

D/L (Displacement Length Ratio)
What is Displacement Length Ratio?
The DL-ratio for Drabant 24 is 190 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)
What is SA/D (Sail Area Displacement ratio)?
The SA/D for Drabant 24 with ISO 8666 reference sail is 14.5, with a 135% genua the SA/D is 17.2.

Low High 27% 0 50 100
The SA/D ratio indicates that it is faster than 27% of all similar sailboat designs in light wind.

Over- / underrigged
Low High 34% 0 50 100
The Drabant 24 has more rig than 34% of all similar sailboats, which indicates that the boat is slightly underrigged.

RSP (Relative Speed Performance)
What is Relative Speed Performance?
The Relative Speed Performance for Drabant 24 is 69

Slow Fast 69% 0 50 100
The relative speed performance is 69 which means that a it is faster than 69% of all similar sailboat designs.


Bottom Paint
When buying anti-fouling bottom paint, it's nice to know how much to buy. The surface of the wet bottom is about 20m2 (215 ft2).
Based on this, your favourite maritime shop can tell you the quantity you need.
Note: If you use a paint roller you will need more paint than if you use a paintbrush.

Dimensions of sail for masthead rig.
mainsail specifications genoa specifications spinnaker specifications
Are your sails worn out? You might find your next sail here: Sails for Sale

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
Mainsail halyard 22.9 m(75.2 feet)8 mm(5/16 inch)
Jib/genoa halyard22.9 m(75.2 feet)8 mm(5/16 inch)
Spinnaker halyard22.9 m(75.2 feet)8 mm(5/16 inch)
Jib sheet 7.5 m(24.5 feet)10 mm(3/8 inch)
Genoa sheet7.5 m(24.5 feet)10 mm(3/8 inch)
Mainsheet 18.7 m(61.3 feet)10 mm(3/8 inch)
Spinnaker sheet16.4 m(53.9 feet)10 mm(3/8 inch)
Cunningham2.5 m(8.4 feet)8 mm(5/16 inch)
Kickingstrap5.1 m(16.7 feet)8 mm(5/16 inch)
Clew-outhaul5.1 m(16.7 feet)8 mm(5/16 inch)

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