Review of Dehler 25 F
Basic specs.
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The hull is made of hand laid fibreglass while the deck is made of fibreglass. Generally, a hull made of hand laid 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 deck is a sandwich construction which improves the indoor climate. Especially when the water is colder than the air in the cabin, then the double hull insulates against cold water and reduce the condense water in the cabin.
The interior is like many other boats made of mahogany. Mahogany belongs to the hardwood species, known for being water-repellent and resistant to decay. It has an attractive wood grain and holds wood polish and varnish well.
The boat is equipped with 4 berths, a galley, 60.0 liter fresh water capacity and toilet facility.
The Dehler 25 F 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.
Fin keel
The Dehler 25 F 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 boat can enter even shallow marinas as the draft is just about 1.25 - 1.35 meter (4.10 - 4.40 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.
What is Capsize Screening Formula (CSF)?
The capsize screening value for Dehler 25 F is 2.52, indicating that this boat would not be accepted to participate in ocean races.
The immersion rate is defined as the weight required to sink the boat a certain level.
The immersion rate for Dehler 25 F is about 127 kg/cm, alternatively 712 lbs/inch.
Meaning: if you load 127 kg cargo on the boat then it will sink 1 cm.
Alternatively, if you load 712 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 Dehler 25 F is 3.04.
The ballast ratio for Dehler 25 F is 74%.
What is Relative Speed Performance?
The Relative Speed Performance for Dehler 25 F is 42
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 | 7.6 m | (24.9 feet) | 10 mm | (3/8 inch) |
| Genoa sheet | 7.6 m | (24.9 feet) | 10 mm | (3/8 inch) |
| Mainsheet | 19.0 m | (62.3 feet) | 10 mm | (3/8 inch) |
| Spinnaker sheet | 16.7 m | (54.9 feet) | 10 mm | (3/8 inch) |
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