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Review of Möre 30


Basic specs.

sail specifications
The Möre 30 is a sailboat designed by the Swedish maritime architect Rolf Magnusson in the early seventies.

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Interior
The boat is equipped with 5 berths and toilet facility.

Rig
Rig
Rig of Möre 30 anno 1985. Photo of the fractional rig
The boat has more than one rig.

One option is a fractional rig. A fractional rig has smaller headsails which make tacking easier, which is an advantage for cruisers and racers, of course. The downside is that having the wind from behind often requires a genaker or a spinnaker for optimal speed.

Another option is 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

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.

Möre 30 can enter most marinas as the draft is just about 1.60 - 1.70 meter (5.25 - 5.55 ft) dependent on the load. See immersion rate below.


Engine

The boat is typically equipped with an inboard Yanmar diesel engine at 12.0 hp (8 kW), which gives a max speed about 4.6 knots.


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 Möre 30 is 2.05, indicating that this boat would not 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 6.4 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 Möre 30 is about 137 kg/cm, alternatively 771 lbs/inch.
Meaning: if you load 137 kg cargo on the boat then it will sink 1 cm. Alternatively, if you load 771 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 Möre 30 is 20.9.

Low High 38% 0 50 100
Comparing this ratio with similar sailboats show that it is more comfortable than 38% of all similar sailboat designs. This comfort value is just below average.


L/B (Length Beam Ratio)

What is L/B (Length Beam Ratio)?

The l/b ratio for Möre 30 is 3.00.

Slim Wide 58% 0 50 100
Compared with other similar sailboats it is more spacy than 58% of all other designs. It seems that the designer has chosen a slightly more spacy hull design.


Ballast Ratio

What is a Ballast Ratio?

The ballast ratio for Möre 30 is 42%.

Low High 58% 0 50 100
This ballast ratio shows a righting moment that is higher than 58% 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 Möre 30 is 277 which categorizes this boat among 'medium weight cruisers'.

Heavy Light 42% 0 50 100
42% 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.


SA/D (Sail Area Displacement ratio)

What is SA/D (Sail Area Displacement ratio)?

The SA/D for Möre 30 with ISO 8666 reference sail is 16.2, with a 135% genua the SA/D is 19.6.

Low High 54% 0 50 100
The SA/D ratio indicates that it is faster than 54% of all similar sailboat designs in light wind.


Over- / underrigged

Low High 58% 0 50 100
The Möre 30 has more rig than 58% of all similar sailboats, which indicates that the boat is slightly overrigged.


RSP (Relative Speed Performance)

What is Relative Speed Performance?

The Relative Speed Performance for Möre 30 is 46

Slow Fast 46% 0 50 100
The relative speed performance is 46 which means that a it is faster than 46% of all similar sailboat designs.


Maintenance

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 24m2 (258 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.


Rig

Dimensions of sail for masthead rig.

mainsail specifications headsail 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
Masthead rig
UsageLengthDiameter
Mainsail halyard 25.6 m(83.8 feet)8 mm(5/16 inch)
Jib/genoa halyard25.6 m(83.8 feet)8 mm(5/16 inch)
Spinnaker halyard25.6 m(83.8 feet)8 mm(5/16 inch)
Jib sheet 9.0 m(29.5 feet)10 mm(3/8 inch)
Genoa sheet9.0 m(29.5 feet)10 mm(3/8 inch)
Mainsheet 22.5 m(73.8 feet)10 mm(3/8 inch)
Spinnaker sheet19.8 m(65.0 feet)10 mm(3/8 inch)
Cunningham2.9 m(9.5 feet)8 mm(5/16 inch)
Kickingstrap5.8 m(19.0 feet)8 mm(5/16 inch)
Clew-outhaul5.8 m(19.0 feet)8 mm(5/16 inch)
Fractional rig
UsageLengthDiameter
Mainsail halyard 29.3 m(96.1 feet)8 mm(5/16 inch)
Jib/genoa halyard29.3 m(96.1 feet)8 mm(5/16 inch)
Spinnaker halyard29.3 m(96.1 feet)8 mm(5/16 inch)
Jib sheet 9.0 m(29.5 feet)10 mm(3/8 inch)
Genoa sheet9.0 m(29.5 feet)10 mm(3/8 inch)
Mainsheet 22.5 m(73.8 feet)10 mm(3/8 inch)
Spinnaker sheet19.8 m(65.0 feet)10 mm(3/8 inch)
Cunningham3.3 m(10.7 feet)8 mm(5/16 inch)
Kickingstrap6.5 m(21.4 feet)8 mm(5/16 inch)
Clew-outhaul6.5 m(21.4 feet)8 mm(5/16 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 Möre 30 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