Review of Puma 38
Basic specs.
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The Puma 38 is equipped with a fin keel. A boat with a fin keel is more manoeuvrable but has less directional stability than a similar boat with 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 only enter major marinas as the draft is about 1.95 - 2.05 meter (6.40 - 6.70 ft) dependent on the load. See immersion rate below.
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.
The immersion rate is defined as the weight required to sink the boat a certain level.
The immersion rate for Puma 38 is about 282 kg/cm, alternatively 1583 lbs/inch.
Meaning: if you load 282 kg cargo on the boat then it will sink 1 cm.
Alternatively, if you load 1583 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 Puma 38 is 3.24.
The ballast ratio for Puma 38 is 43%.
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 | 11.7 m | (38.4 feet) | 14 mm | (0.55 inch) |
| Genoa sheet | 11.7 m | (38.4 feet) | 14 mm | (0.55 inch) |
| Mainsheet | 29.2 m | (95.9 feet) | 14 mm | (0.55 inch) |
| Spinnaker sheet | 25.7 m | (84.4 feet) | 14 mm | (0.55 inch) |
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