Review of Morris 51

Basic specs.

sail specifications
The Morris 51 is a large sailboat designed by the maritime architect bureau Chuck W. Paine & Associates in the early 2000. Only a few boats have been produced. The Morris 51 is built by the American yard Able Marine.

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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.

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.

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 Morris 51 is 1.74, 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 9.0 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 Morris 51 is about 398 kg/cm, alternatively 2234 lbs/inch.
Meaning: if you load 398 kg cargo on the boat then it will sink 1 cm. Alternatively, if you load 2234 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 Morris 51 is 33.4.

Low High 46% 0 50 100
Comparing this ratio with similar sailboats show that it is more comfortable than 46% 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 Morris 51 is 3.58.

Wide Slim 58% 0 50 100
Compared with other similar sailboats it is slimmer than 58% 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 Morris 51 is 171 which categorizes this boat among 'light racers'.

Heavy Light 73% 0 50 100
73% 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 Morris 51 with ISO 8666 reference sail is 16.7, with a 135% genua the SA/D is 19.8.

Low High 15% 0 50 100
The SA/D ratio indicates that it is faster than 15% of all similar sailboat designs in light wind.



Dimensions of sail for masthead rig.

mainsail specifications headsail 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 45.5 m(149.3 feet)14 mm(0.55 inch)
Jib/genoa halyard45.5 m(149.3 feet)14 mm(0.55 inch)
Spinnaker halyard45.5 m(149.3 feet)14 mm(0.55 inch)
Jib sheet 15.5 m(51.0 feet)16 mm(5/8 inch)
Genoa sheet15.5 m(51.0 feet)16 mm(5/8 inch)
Mainsheet 38.8 m(127.5 feet)16 mm(5/8 inch)
Spinnaker sheet34.2 m(112.2 feet)16 mm(5/8 inch)
Cunningham5.6 m(18.5 feet)14 mm(0.55 inch)
Kickingstrap11.3 m(37.0 feet)14 mm(0.55 inch)
Clew-outhaul11.3 m(37.0 feet)14 mm(0.55 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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