Review of C&C 25
Basic specs.
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Both the hull and the deck is made of fibreglass. A hull made of fibreglass requires only a minimum of maintenance during the sailing season.
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 core material in the sandwich construction is balsa.
The boat is equipped with 4 berths, a galley and 38 liters (10 US gallons, 8 imperial gallons) fresh water capacity.
The interior is like most other boats made of teak. Teak has the advantage of being naturally very oily and therefore water-repellent, which is suitable on boats.
The C&C 25 is built with a masthead rig. The advantage of a masthead rig is its simplicity and the fact that a given sail area - compared with a fractional rig - can be carried lower and thus with less heeling moment.
Fin keel
The C&C 25 is built 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 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.
C&C 25 can enter even shallow marinas as the draft is just about 1.17 - 1.27 meter (3.84 - 4.14 ft) dependent on the load. See immersion rate below.
The boat may be equipped with an inboard Yanmar diesel engine at 8 hp (5 kW). Calculated max speed is about 3.9 knots
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 C&C 25 is 1.92, indicating that this boat could - if evaluated by this formula alone - 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 6.1 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 C&C 25 is about 110 kg/cm, alternatively 621 lbs/inch.
Meaning: if you load 110 kg cargo on the boat then it will sink 1 cm.
Alternatively, if you load 621 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 C&C 25 is 20.0 - 23.4.
What is L/B (Length Beam Ratio)?
The l/b ratio for C&C 25 is 2.88.
The ballast ratio for C&C 25 is 39%.
What is Displacement Length Ratio?
The DL-ratio for C&C 25 is 285 which categorizes this boat among 'heavy cruisers'.
What is SA/D (Sail Area Displacement ratio)?
The SA/D for C&C 25 with ISO 8666 reference sail is 14.9, with a 135% genua the SA/D is 17.8.
What is Relative Speed Performance?
The Relative Speed Performance for C&C 25 is 73
Maintenance
As balsa wood is used as sandwich core material special care must be taken in relation to work that require penetration of the sandwich construction in order to to prevent water to get in contact with the balsa wood. Otherwise the balsa wood will eventually rotten and be expensive/impossible to repair.
When buying anti-fouling bottom paint, it's nice to know how much to buy.
The surface of the wet bottom is about 18m2 (193 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.
Dimensions of sail for masthead 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 | 21.5 m | (70.5 feet) | 8 mm | (5/16 inch) |
| Jib/genoa halyard | 21.5 m | (70.5 feet) | 8 mm | (5/16 inch) |
| Spinnaker halyard | 21.5 m | (70.5 feet) | 8 mm | (5/16 inch) |
| Jib sheet | 7.6 m | (25.0 feet) | 10 mm | (3/8 inch) |
| Genoa sheet | 7.6 m | (25.0 feet) | 10 mm | (3/8 inch) |
| Mainsheet | 19.1 m | (62.6 feet) | 10 mm | (3/8 inch) |
| Spinnaker sheet | 16.8 m | (55.1 feet) | 10 mm | (3/8 inch) |
| Cunningham | 3.0 m | (10.0 feet) | 8 mm | (5/16 inch) |
| Kickingstrap | 6.1 m | (20.0 feet) | 8 mm | (5/16 inch) |
| Clew-outhaul | 6.1 m | (20.0 feet) | 8 mm | (5/16 inch) |
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