Review of Uttern 890
Basic specs.
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Both the hull and the deck 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 6-8 berths and 170.0 liter fresh water capacity.
The Uttern 890 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 boat may be equipped with an inboard Volvo Penta 2003 engine at 28 hp (20 kW). Calculated max speed is about 7.1 knots
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 100.0 liters (26 US gallons, 21 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 Uttern 890 is 1.99, 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 6.7 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 Uttern 890 is about 153 kg/cm, alternatively 861 lbs/inch.
Meaning: if you load 153 kg cargo on the boat then it will sink 1 cm.
Alternatively, if you load 861 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 Uttern 890 is 21.4.
What is L/B (Length Beam Ratio)?
The l/b ratio for Uttern 890 is 2.97.
What is Displacement Length Ratio?
The DL-ratio for Uttern 890 is 217 which categorizes this boat among 'light crusers & offshore racers'.
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 | 8.9 m | (29.2 feet) | 10 mm | (3/8 inch) |
| Genoa sheet | 8.9 m | (29.2 feet) | 10 mm | (3/8 inch) |
| Mainsheet | 22.2 m | (73.0 feet) | 10 mm | (3/8 inch) |
| Spinnaker sheet | 19.6 m | (64.2 feet) | 10 mm | (3/8 inch) |
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