Review of Princess 28

Princess 28
Princess 28 anno 1971.

Basic specs.

sail specifications
The Princess 28 is a sailboat designed by the maritime architect Odd Rembert Andersen in the late sixties. Less than 100 boats have been produced. The Princess 28 is built by the Danish yard ORØ-Dansk Kunststof Industri A/S.

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The hull 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 hull is a double hull which improves the indoor climate. Especially when the water is colder than the air in the cabin, then the double hull insulates against cold water and reduce the condense water in the cabin.

The interior is like most other boats made of teak.
The boat is equipped with 2 cabins, 5 berths, a galley, toilet facility and 24 liter waste water capacity.
The headroom is above average

Cockpit of Princess 28 anno 1971.
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.


The boat is typically equipped with an inboard Bukh diesel engine at 9.0 hp (6 kW), which gives a max speed about 3.8 knots.

The transmission is a shaft drive. A shaft drive will in the long run require less maintenence than other types of drive e.g. a sail drive.

The fuel tank has a capacity of 40 liters (10 US gallons, 8 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 Princess 28 is 1.76, 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 Princess 28 is about 119 kg/cm, alternatively 671 lbs/inch.
Meaning: if you load 119 kg cargo on the boat then it will sink 1 cm. Alternatively, if you load 671 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 Princess 28 is 27.1 - 27.9.

Low High 86% 0 50 100
Comparing this ratio with similar sailboats show that it is more comfortable than 86% of all similar sailboat designs. This is a comfort value significantly above average.

L/B (Length Beam Ratio)

What is L/B (Length Beam Ratio)?

The l/b ratio for Princess 28 is 3.18.

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 Princess 28 is 312 which categorizes this boat among 'medium weight cruisers'.

Heavy Light 21% 0 50 100
21% of all similar sailboat designs are categorized as heavier. A heavy displacement combined with smaller water plane area has lower acceleration and is more comfortable.

RSP (Relative Speed Performance)

What is Relative Speed Performance?

The Relative Speed Performance for Princess 28 is 21

Slow Fast 21% 0 50 100
The relative speed performance is 21 which means that a it is faster than 21% of all similar sailboat designs.



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 8.4 m(27.7 feet)10 mm(3/8 inch)
Genoa sheet8.4 m(27.7 feet)10 mm(3/8 inch)
Mainsheet 21.1 m(69.1 feet)10 mm(3/8 inch)
Spinnaker sheet18.5 m(60.8 feet)10 mm(3/8 inch)

Boat owner's ideas

This section shown boat owner's changes, improvements, etc. Here you might find inspiration for your boat.

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