Review of Phobos 25
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 Phobos 25 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.
CentreBoard
The Phobos 25 is equipped with a centreboard keel. A centreboard keel is a pivoting lifting keel, allowing to sail both coastal and inland waters.
The boat can sail close to the beach as the draft is just 0.34 - 0.44 meter (1.12 - 1.42 ft) dependent of 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 Phobos 25 is 2.25, 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 Phobos 25 is about 151 kg/cm, alternatively 849 lbs/inch.
Meaning: if you load 151 kg cargo on the boat then it will sink 1 cm.
Alternatively, if you load 849 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 Phobos 25 is 2.77.
The ballast ratio for Phobos 25 is 29%.
SA/D (Sail Area Displacement ratio)
Indicates how fast the boat is in light wind:
- Cruising Boats have ratios 10-15
- Cruiser-Racers have ratios 16-20
- Racers have ratios above 20
- High-Performance Racers have ratios above 24
Sail-area/displacement ratio (SA/D ratio): 18.60
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 | 7.9 m | (26.0 feet) | 10 mm | (3/8 inch) |
| Genoa sheet | 7.9 m | (26.0 feet) | 10 mm | (3/8 inch) |
| Mainsheet | 19.8 m | (65.0 feet) | 10 mm | (3/8 inch) |
| Spinnaker sheet | 17.4 m | (57.2 feet) | 10 mm | (3/8 inch) |
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