Review of B 25
Basic specs.
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Looking for a new boat? Find a B 25 or similar boat for sale
The boat is equipped with 5 berths.
Note: the boat has also been sold to be self-made/-interiored, which means that the quality of each boat may vary.
The B 25 is built 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.
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 B 25 is 2.13, 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 B 25 is about 131 kg/cm, alternatively 737 lbs/inch.
Meaning: if you load 131 kg cargo on the boat then it will sink 1 cm.
Alternatively, if you load 737 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 B 25 is 2.86.
What is SA/D (Sail Area Displacement ratio)?
The SA/D for B 25 with ISO 8666 reference sail is 16.8, with a 135% genua the SA/D is 19.4.
Maintenance
Dimensions of sail for fractional rig.
Are your sails worn out? You might find your next sail here: Sails for Sale
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 | ||
| Mainsail halyard | 22.6 m | (74.2 feet) | 8 mm | (5/16 inch) |
| Jib/genoa halyard | 22.6 m | (74.2 feet) | 8 mm | (5/16 inch) |
| Spinnaker halyard | 22.6 m | (74.2 feet) | 8 mm | (5/16 inch) |
| Jib sheet | 7.5 m | (24.6 feet) | 10 mm | (3/8 inch) |
| Genoa sheet | 7.5 m | (24.6 feet) | 10 mm | (3/8 inch) |
| Mainsheet | 18.8 m | (61.5 feet) | 10 mm | (3/8 inch) |
| Spinnaker sheet | 16.5 m | (54.1 feet) | 10 mm | (3/8 inch) |
| Cunningham | 3.4 m | (11.0 feet) | 8 mm | (5/16 inch) |
| Kickingstrap | 6.7 m | (22.0 feet) | 8 mm | (5/16 inch) |
| Clew-outhaul | 6.7 m | (22.0 feet) | 8 mm | (5/16 inch) |
This section is reserved boat owner's modifications, improvements, etc. Here you might find (or contribute with) inspiration for your boat.
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