Review of Nimona 28

Basic specs.

The Nimona 28 is a motorsailer designed by the Swedish maritime architect Per Brohäll in the mid seventies.

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Interior

The interior is like most other boats made of teak.
The boat is equipped with a galley and toilet facility.
The headroom is above average

Engine

The boat is typically equipped with a Volvo Penta engine at 36.0 hp (26 kW).

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 Nimona 28 is 1.99, indicating that this boat could - if evaluated by this formula alone - be accepted to participate in ocean races.

Immersion rate

The immersion rate is defined as the weight required to sink the boat a certain level. The immersion rate for Nimona 28 is about 156 kg/cm, alternatively 873 lbs/inch.
Meaning: if you load 156 kg cargo on the boat then it will sink 1 cm. Alternatively, if you load 873 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.

L/B (Length Beam Ratio)

What is L/B (Length Beam Ratio)?

The l/b ratio for Nimona 28 is 2.89.

Compared with other similar sailboats it is more spacy than 69% of all other designs. It seems that the designer has chosen a slightly more spacy hull design.

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): 14.22

Maintenance

Rig

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**
Usage	Length		Diameter
Jib sheet	8.2 m	(26.9 feet)	10 mm	(3/8 inch)
Genoa sheet	8.2 m	(26.9 feet)	10 mm	(3/8 inch)
Mainsheet	20.5 m	(67.3 feet)	10 mm	(3/8 inch)
Spinnaker sheet	18.0 m	(59.2 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.

Do you have changes/improvements you would like to share? Upload a photo and describe what to look for.

Finally

We are always looking for new photos. If you can contribute with photos for Nimona 28 it would be a great help.

If you have any comments to the review, improvement suggestions, or the like, feel free to contact us. Criticism helps us to improve.

References

[Ref 1]: ISO 8666 Small craft — Principal data.
[Ref 3]: ISO 12215-5 Small craft — Hull construction and scantlings.