Review of Oceanis 311 Clipper
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 interior is like few other boats made in cherry.
The boat is equipped with 3 cabins, 6 berths, a galley, 200.0 liter fresh water capacity and toilet facility.
The Oceanis 311 Clipper 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.
The Oceanis 311 Clipper has been built with different keel alternatives.
Fin keel
The Oceanis 311 Clipper is equipped with a fin keel. The fin keel is the most common keel and provides splendid manoeuvrability. The downside is that it has less directional stability than a long 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. As the surface of a fin type keel is just a fraction of the total wet surface, the difference between an iron keel and a lead keel can in reality be ignored for cruising yachts.
The boat can enter even shallow marinas as the draft is just about 1.45 - 1.55 meter (4.76 - 5.06 ft) dependent on the load. See immersion rate below.
CentreBoard
The Oceanis 311 Clipper is equipped with a centreboard keel. A centreboard keel is a pivoting lifting keel, allowing to sail both coastal and inland waters.
This keel is also made of iron.
Oceanis 311 Clipper can enter even shallow marinas as the draft is just about 0.80 - 0.90 meter (2.62 - 2.92 ft) dependent on the load. See immersion rate below.
The Oceanis 311 Clipper has been equipped with different engine alternatives.
Alternative 1:
The boat may be equipped with an inboard Yanmar diesel engine
The transmission is a shaft drive. A shaft drive will in the long run require less maintenance than other types of drive e.g. a sail drive.
Alternative 2:
The boat may be equipped with an inboard Volvo Penta MD2020 diesel engine at 18 hp (13 kW).
The transmission is a shaft drive. A shaft drive will in the long run require less maintenance than other types of drive e.g. a sail drive.
The fuel tank has a capacity of 70.0 liters (18 US gallons, 15 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.
Oceanis 311 Clipper holds two 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:
What is Theoretical Maximum Hull Speed?
The theoretical maximal speed of a displacement boat of this length is 7.2 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 Oceanis 311 Clipper is about 190 kg/cm, alternatively 1066 lbs/inch.
Meaning: if you load 190 kg cargo on the boat then it will sink 1 cm.
Alternatively, if you load 1066 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 311 Clipper is 2.94.
The ballast ratio for Oceanis 311 Clipper is 30%.
Maintenance
When buying anti-fouling bottom paint, it's nice to know how much to buy.
The surface of the wet bottom is about 31m2 (333 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 | 9.5 m | (31.2 feet) | 12 mm | (1/2 inch) |
| Genoa sheet | 9.5 m | (31.2 feet) | 12 mm | (1/2 inch) |
| Mainsheet | 23.8 m | (77.9 feet) | 12 mm | (1/2 inch) |
| Spinnaker sheet | 20.9 m | (68.6 feet) | 12 mm | (1/2 inch) |
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