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 boat is equipped with 151.0 liter fresh water capacity.
The boat equipped with a ketch rig. A ketch rig is generally considered easier to handle, because the sails are smaller, and because it can sail on most points to the wind with one sail completely taken down for repair or while reefing. The sail configuration of a ketch allows for better comfort and stability when sailing downwind or on a broad reach.
Unknown keel type
The boat can enter even shallow marinas as the draft is just about 0.99 - 1.09 meter (3.25 - 3.55 ft) dependent on the load. See immersion rate below.
Wight Mk I 31 is typically equipped with an inboard BMC diesel engine at 33 hp (24 kW). Calculated max speed is about 6.9 knots
The fuel tank has a capacity of 95.0 liters (25 US gallons, 20 imperial gallons).
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 Wight Mk I 31 is 1.81, indicating that this boat could - if evaluated by this formula alone - 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 6.5 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 Wight Mk I 31 is about 137 kg/cm, alternatively 770 lbs/inch.
Meaning: if you load 137 kg cargo on the boat then it will sink 1 cm.
Alternatively, if you load 770 lbs cargo on the boat it will sink 1 inch.
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 Wight Mk I 31 is 27.1.
What is L/B (Length Beam Ratio)?
The l/b ratio for Wight Mk I 31 is 3.24.
The ballast ratio for Wight Mk I 31 is 25%.
What is Displacement Length Ratio?
The DL-ratio for Wight Mk I 31 is 308 which categorizes this boat among 'medium weight cruisers'.
When buying anti-fouling bottom paint, it's nice to know how much to buy.
The surface of the wet bottom is about 21m2 (226 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.
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 | ||
Jib sheet | 9.3 m | (30.5 feet) | 12 mm | (1/2 inch) |
Genoa sheet | 9.3 m | (30.5 feet) | 12 mm | (1/2 inch) |
Mainsheet | 23.2 m | (76.3 feet) | 12 mm | (1/2 inch) |
Spinnaker sheet | 20.5 m | (67.1 feet) | 12 mm | (1/2 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 Wight Mk I 31 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.