Review of Krogen 38
Basic specs.
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The Krogen 38 is equipped with a centerboard keel. A centerboard keel is a pivoting lifting keel, allowing to sail both coastal and inland waters.
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 enter even shallow marinas as the draft is just about 0.96 - 1.06 meter (3.15 - 3.45 ft) dependent on the load. See immersion rate below.
The boat is typically equipped with a Pathfinder diesel engine at 42.0 hp (31 kW), which gives a max speed about 17.6 knots.
The fuel tank has a capacity of 303.0 liters (80 US gallons, 66 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 Krogen 38 is 3.78, 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 7.6 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 Krogen 38 is about 252 kg/cm, alternatively 1416 lbs/inch.
Meaning: if you load 252 kg cargo on the boat then it will sink 1 cm.
Alternatively, if you load 1416 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 Krogen 38 is 3.7.
What is L/B (Length Beam Ratio)?
The l/b ratio for Krogen 38 is 3.01.
The ballast ratio for Krogen 38 is 29%.
What is Displacement Length Ratio?
The DL-ratio for Krogen 38 is 32 which categorizes this boat among 'ultra light racers'.
Maintenance
When buying anti-fouling bottom paint, it's nice to know how much to buy.
The surface of the wet bottom is about 43m2 (462 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 | 11.6 m | (38.2 feet) | 14 mm | (0.55 inch) |
| Genoa sheet | 11.6 m | (38.2 feet) | 14 mm | (0.55 inch) |
| Mainsheet | 29.1 m | (95.4 feet) | 14 mm | (0.55 inch) |
| Spinnaker sheet | 25.6 m | (83.9 feet) | 14 mm | (0.55 inch) |
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