Review of 11: Metre One Design
Basic specs.
If you have a photo you would like to share: Upload Image
Looking for a new boat? Find a 11: Metre One Design or similar boat for sale
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 sandwich construction 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 core material in the sandwich construction is balsa.
The boat is equipped with one cabin and a galley.
The 11: Metre One Design is equipped with 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 gennaker or a spinnaker for optimal speed.
Fin keel
The 11: Metre One Design is equipped with a fin keel. A boat with a fin keel is more manoeuvrable but has less directional stability than a similar boat with a full keel.
The keel is made of lead. Compared with iron, lead has the advantage of being 44% heavier, which allows a smaller keel and hence less water resistance and higher speed.
The boat can only enter major marinas as the draft is about 1.80 - 1.90 meter (5.91 - 6.21 ft) dependent on the load. See immersion rate below.
An outboard motor is often used on this boat. In that case 11: Metre One Design will typically require a power of 3 - 4 hp, alternatively 71 - 85 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.
What is Capsize Screening Formula (CSF)?
The capsize screening value for 11: Metre One Design is 2.22, indicating that this boat would not be accepted to participate in ocean races.
What is Theoretical Maximum Hull Speed?
The theoretical maximal speed of a displacement boat of this length is 7.0 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.
The immersion rate is defined as the weight required to sink the boat a certain level.
The immersion rate for 11: Metre One Design is about 141 kg/cm, alternatively 790 lbs/inch.
Meaning: if you load 141 kg cargo on the boat then it will sink 1 cm.
Alternatively, if you load 790 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.
What is Motion Comfort Ratio (MCR)?
The Motion Comfort Ratio for 11: Metre One Design is 10.9.
What is L/B (Length Beam Ratio)?
The l/b ratio for 11: Metre One Design is 3.99.
The ballast ratio for 11: Metre One Design is 44%.
What is Displacement Length Ratio?
The DL-ratio for 11: Metre One Design is 80 which categorizes this boat among 'ultra light racers'.
What is SA/D (Sail Area Displacement ratio)?
The SA/D for 11: Metre One Design with ISO 8666 reference sail is 27.9, with a 135% genua the SA/D is 31.9.
Maintenance
As balsa wood is used as sandwich core material special care must be taken in relation to work that require penetration of the sandwich construction in order to to prevent water to get in contact with the balsa wood. Otherwise the balsa wood will eventually rotten and be expensive/impossible to repair.
When buying anti-fouling bottom paint, it's nice to know how much to buy.
The surface of the wet bottom is about 27m2 (290 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 fractional rig.
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.
| Usage | Length | Diameter | ||
| Mainsail halyard | 28.7 m | (94.2 feet) | 10 mm | (3/8 inch) |
| Jib/genoa halyard | 28.7 m | (94.2 feet) | 10 mm | (3/8 inch) |
| Spinnaker halyard | 28.7 m | (94.2 feet) | 10 mm | (3/8 inch) |
| Jib sheet | 10.2 m | (33.6 feet) | 12 mm | (1/2 inch) |
| Genoa sheet | 10.2 m | (33.6 feet) | 12 mm | (1/2 inch) |
| Mainsheet | 25.6 m | (84.1 feet) | 12 mm | (1/2 inch) |
| Spinnaker sheet | 22.6 m | (74.0 feet) | 12 mm | (1/2 inch) |
| Cunningham | 4.1 m | (13.5 feet) | 10 mm | (3/8 inch) |
| Kickingstrap | 8.2 m | (27.0 feet) | 10 mm | (3/8 inch) |
| Clew-outhaul | 8.2 m | (27.0 feet) | 10 mm | (3/8 inch) |
This section is reserved boat owner's modifications, improvements, etc. Here you might find (or contribute with) inspiration for your boat.
Do you have changes/improvements you would like to share? Upload a photo and describe what you have done.
We are always looking for new photos. If you can contribute with photos for 11: Metre One Design 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.