Review of LM 24
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 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 one cabin, a galley, 90.0 liter fresh water capacity and toilet facility.
The LM 24 is equipped 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.
Full keel
The LM 24 is equipped with a long keel. A full keel provide a better directional stability than a similar boat with a fin keel; on the other hand, better directional stability means also that the boat is more difficult to handle in a harbour with less space.
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.
The boat can enter even shallow marinas as the draft is just about 1.00 - 1.10 meter (3.28 - 3.58 ft) dependent on the load. See immersion rate below.
The LM 24 has been equipped with different engine alternatives.
Alternative 1:
LM 24 may be equipped with an inboard Volvo Penta MD 7A diesel engine
Alternative 2:
The boat may be equipped with an inboard Volvo Penta MD 11C diesel engine
Alternative 3:
The boat may be equipped with an inboard Bukh DV20 diesel engine
The transmission is a saildrive.
Alternative 4:
LM 24 may be equipped with an inboard Bukh DV10 diesel engine at 10 hp (7 kW). Calculated max speed is about 4.5 knots
The transmission is a saildrive.
The fuel tank has a capacity of 90.0 liters (23 US gallons, 19 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 LM 24 is 1.83, 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 6.0 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 LM 24 is about 100 kg/cm, alternatively 562 lbs/inch.
Meaning: if you load 100 kg cargo on the boat then it will sink 1 cm.
Alternatively, if you load 562 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 LM 24 is 24.8.
What is L/B (Length Beam Ratio)?
The l/b ratio for LM 24 is 2.93.
The ballast ratio for LM 24 is 40%.
What is Displacement Length Ratio?
The DL-ratio for LM 24 is 306 which categorizes this boat among 'medium weight cruisers'.
What is SA/D (Sail Area Displacement ratio)?
The SA/D for LM 24 with ISO 8666 reference sail is 12.4, with a 135% genua the SA/D is 14.4.
Don't panic! It is expected that motor sailers has a low SA/D value as this is the natural consequence of the design combining sailing and motor boat characteristics.
It is expected that motor sailers are underrigged as this is the natural consequence of combining sailing and motor characteristics.
What is Relative Speed Performance?
The Relative Speed Performance for LM 24 is 1
Maintenance
When buying anti-fouling bottom paint, it's nice to know how much to buy.
The surface of the wet bottom is about 16m2 (172 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 | 20.9 m | (68.7 feet) | 8 mm | (5/16 inch) |
| Jib/genoa halyard | 20.9 m | (68.7 feet) | 8 mm | (5/16 inch) |
| Spinnaker halyard | 20.9 m | (68.7 feet) | 8 mm | (5/16 inch) |
| Jib sheet | 7.2 m | (23.6 feet) | 10 mm | (3/8 inch) |
| Genoa sheet | 7.2 m | (23.6 feet) | 10 mm | (3/8 inch) |
| Mainsheet | 18.0 m | (59.1 feet) | 10 mm | (3/8 inch) |
| Spinnaker sheet | 15.8 m | (52.0 feet) | 10 mm | (3/8 inch) |
| Cunningham | 3.2 m | (10.5 feet) | 8 mm | (5/16 inch) |
| Kickingstrap | 6.4 m | (21.0 feet) | 8 mm | (5/16 inch) |
| Clew-outhaul | 6.4 m | (21.0 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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