Review of Mega 30
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 boat 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 genaker or a spinnaker for optimal speed.
The Mega 30 has been built with different keel alternatives.
DaggerBoard
The Mega 30 is equipped with a daggerboard keel. A daggerboard is a lifting keel that can be lowered and raised, allowing the boat to enter shallow waters as well.
The keel is made of iron. Many people prefer lead keel in favour of iron. The main argument is that lead is much heavier than iron and a lead keel can therefore be made smaller which again result in less wet surface, i.e. less drag. In fact iron is quite heavy, just 30% less heavy than lead, so the advantage of a lead keel is often overstated. As the surface of a fin type keel is just a fraction of the total wet surface, the difference between an iron keel and a lead keel can in reality be ignored for cruising yachts.
The boat can enter even shallow marinas as the draft is just about 0.61 - 0.71 meter (2.00 - 2.30 ft) dependent on the load. See immersion rate below.
Fin keel
The Mega 30 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.
This keel is also made of iron.
The boat can enter most marinas as the draft is just about 1.58 - 1.68 meter (5.18 - 5.48 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 Mega 30 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 7.0 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 Mega 30 is about 133 kg/cm, alternatively 749 lbs/inch.
Meaning: if you load 133 kg cargo on the boat then it will sink 1 cm.
Alternatively, if you load 749 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 Mega 30 is 15.7.
What is L/B (Length Beam Ratio)?
The l/b ratio for Mega 30 is 3.77.
The ballast ratio for Mega 30 is 42%.
What is Displacement Length Ratio?
The DL-ratio for Mega 30 is 101 which categorizes this boat among 'ultra light racers'.
What is SA/D (Sail Area Displacement ratio)?
The SA/D for Mega 30 with ISO 8666 reference sail is 24.6, with a 135% genua the SA/D is 28.4.
What is Relative Speed Performance?
The Relative Speed Performance for Mega 30 is 73
Maintenance
When buying anti-fouling bottom paint, it's nice to know how much to buy.
The surface of the wet bottom is about 24m2 (258 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 | 28.5 m | (93.4 feet) | 10 mm | (3/8 inch) |
| Jib/genoa halyard | 28.5 m | (93.4 feet) | 10 mm | (3/8 inch) |
| Spinnaker halyard | 28.5 m | (93.4 feet) | 10 mm | (3/8 inch) |
| Jib sheet | 9.1 m | (29.9 feet) | 12 mm | (1/2 inch) |
| Genoa sheet | 9.1 m | (29.9 feet) | 12 mm | (1/2 inch) |
| Mainsheet | 22.8 m | (74.8 feet) | 12 mm | (1/2 inch) |
| Spinnaker sheet | 20.1 m | (65.8 feet) | 12 mm | (1/2 inch) |
| Cunningham | 4.0 m | (13.3 feet) | 10 mm | (3/8 inch) |
| Kickingstrap | 8.1 m | (26.5 feet) | 10 mm | (3/8 inch) |
| Clew-outhaul | 8.1 m | (26.5 feet) | 10 mm | (3/8 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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