Review of Oceanis 31
Basic specs.
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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. 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 2 cabins, 4+2 berths, 155.0 liter fresh water capacity and toilet facility.
The Oceanis 31 is 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.
The Oceanis 31 has been built with different keel alternatives.
Shallow keel
The Oceanis 31 is equipped with a shallow keel. A shallow keel allow to sail both coastal and inland waters.
The boat can enter even shallow marinas as the draft is just about 1.30 - 1.40 meter (4.27 - 4.57 ft) dependent on the load. See immersion rate below.
Unknown keel type
Oceanis 31 can enter even shallow marinas as the draft is just about 0.95 - 1.05 meter (3.12 - 3.42 ft) dependent on the load. See immersion rate below.
The boat may be equipped with an inboard engine at 21 hp (15 kW).
The fuel tank has a capacity of 130.0 liters (34 US gallons, 28 imperial gallons).
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 Oceanis 31 is 2.02, indicating that this boat would not be accepted to participate in ocean races.
Oceanis 31 holds three CE certifications:
If less than 6 in on board the boat is by European Union certified as Class B. OFFSHORE:If less than 8 in on board the boat is by European Union certified as Class C. INSHORE:
If less than 10 in on board the boat is by European Union certified as Class D. SHELTERED WATERS:
The immersion rate is defined as the weight required to sink the boat a certain level.
The immersion rate for Oceanis 31 is about 219 kg/cm, alternatively 1228 lbs/inch.
Meaning: if you load 219 kg cargo on the boat then it will sink 1 cm.
Alternatively, if you load 1228 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 L/B (Length Beam Ratio)?
The l/b ratio for Oceanis 31 is 2.74.
Maintenance
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) |
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