Review of Ravage 36
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.
The hull 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 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 8 berths, a galley, 120.0 liter fresh water capacity and toilet facility.
Note: the boat has also been sold to be self-made/-interiored, which means that the quality of each boat may vary.
The Ravage 36 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 Ravage 36 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 full 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.
Ravage 36 can only enter major marinas as the draft is about 1.85 - 1.95 meter (6.07 - 6.37 ft) dependent on the load. See immersion rate below.
The boat may be equipped with an inboard engine at 10 hp (7 kW). Calculated max speed is about 4.0 knots
The transmission is a saildrive.
The fuel tank has a capacity of 60.0 liters (15 US gallons, 13 imperial gallons).
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 Ravage 36 is 2.02, indicating that this boat would not 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 7.1 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 Ravage 36 is about 189 kg/cm, alternatively 1061 lbs/inch.
Meaning: if you load 189 kg cargo on the boat then it will sink 1 cm.
Alternatively, if you load 1061 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 Ravage 36 is 20.4.
What is L/B (Length Beam Ratio)?
The l/b ratio for Ravage 36 is 3.38.
The ballast ratio for Ravage 36 is 42%.
What is Displacement Length Ratio?
The DL-ratio for Ravage 36 is 192 which categorizes this boat among 'light racers'.
What is SA/D (Sail Area Displacement ratio)?
The SA/D for Ravage 36 with ISO 8666 reference sail is 19.6, with a 135% genua the SA/D is 22.4.
What is Relative Speed Performance?
The Relative Speed Performance for Ravage 36 is 82
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 33m2 (355 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 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 | 33.8 m | (110.9 feet) | 12 mm | (1/2 inch) |
| Jib/genoa halyard | 33.8 m | (110.9 feet) | 12 mm | (1/2 inch) |
| Spinnaker halyard | 33.8 m | (110.9 feet) | 12 mm | (1/2 inch) |
| Jib sheet | 11.1 m | (36.5 feet) | 14 mm | (0.55 inch) |
| Genoa sheet | 11.1 m | (36.5 feet) | 14 mm | (0.55 inch) |
| Mainsheet | 27.8 m | (91.3 feet) | 14 mm | (0.55 inch) |
| Spinnaker sheet | 24.5 m | (80.3 feet) | 14 mm | (0.55 inch) |
| Cunningham | 4.8 m | (15.7 feet) | 12 mm | (1/2 inch) |
| Kickingstrap | 9.6 m | (31.5 feet) | 12 mm | (1/2 inch) |
| Clew-outhaul | 9.6 m | (31.5 feet) | 12 mm | (1/2 inch) |
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