LM 24 Information, Review, Specs

LM 24 Drawing
Make
LM
Model
24
Builder
LM Glasfiber
Designer
Palle Mortensen
Number Built
659
Production Year(s)
1973 - 1984

The LM 24 is a quintessential Danish motor-sailer, representing the smaller end of the iconic range produced by LM Glasfiber. Characterized by its sturdy double-ended hull and a distinct enclosed wheelhouse, the vessel was designed to provide year-round cruising capabilities in the often-unforgiving waters of the North and Baltic Seas. While its larger sibling, the LM 27, became one of the most successful motor-sailers in history, the LM 24 offers a more compact, trailerable alternative that retains the "ship-like" feel and robust construction standards of the larger models. Built during an era when LM Glasfiber was refining its expertise in composite construction, the LM 24 is often described as a "little ship" rather than a mere dayboat, appealing to cruisers who prioritize shelter and stability over raw sailing speed.

InfoView listings

Sailing Performance & Handling

Under sail, the LM 24 behaves exactly as its high-displacement, long-keel profile suggests: it is exceptionally stable but lacks the agility of a dedicated fin-keel cruiser. With a substantial displacement-to-length ratio, the hull provides a motion that is predictable and comfortable in a seaway, resisting the jerky movements common in lighter modern boats. The canoe stern (double-ended design) assists in following seas, preventing the "broaching" tendency found in flat-transom designs.

The sail plan is relatively modest, typically featuring a masthead sloop rig. Because the boat features a large, wind-catching wheelhouse and a shallow draft of approximately 1 meter, its upwind performance is limited. It is most effective on a reach or when "motor-sailing"—using the iron breeze of its internal diesel engine to point higher or maintain momentum through chop. Handling is primarily conducted from the protected wheelhouse, though many owners appreciate the ability to operate the tiller from the aft cockpit during fair weather. According to technical insights shared by the LM Owners Association, the boat's handling is characterized by its "heavy" feel, requiring a proactive approach to steering in tight quarters due to the propeller walk inherent in its traditional long-keel configuration.

Interior Comfort & Variations

The interior of the LM 24 is a masterclass in Scandinavian space efficiency. Despite its 24-foot length, the boat manages to feel significantly larger due to the separation of the galley and the living quarters. The galley is located within the bridge deck/wheelhouse area, allowing the chef to cook with ample ventilation and a view of the horizon, a rare luxury in a vessel of this size. This layout keeps the heat and smells of cooking out of the main cabin.

Stepping down into the forward cabin, one finds a classic V-berth configuration that converts into a double bed, accompanied by a modest folding table. The use of warm teak joinery and high-quality upholstery—hallmarks of LM’s Danish heritage—creates a "hygge" atmosphere. Storage is surprisingly abundant, tucked into lockers beneath the berths and behind the settee backs. While the LM 24 was the primary small-displacement model, it shared many design cues with its siblings; for instance, those seeking more headroom or a dedicated heads compartment often looked toward the LM 27, which utilized a nearly identical layout but on a stretched 8.2-meter hull.

Known Issues & Buyer’s Checklist

When inspecting an LM 24, the primary focus should be the drivetrain and the integrity of the wheelhouse seals.

  1. Bukh Diesel Engine: Many LM 24s were originally fitted with single-cylinder or twin-cylinder Bukh engines. While these are famously reliable and "built for the sea," they are aging. Buyers should check for excessive vibration (indicating worn engine mounts) and verify that parts remain available in their region.
  2. Window Sealing: The large windows of the wheelhouse are a defining feature but are prone to leaking after decades of UV exposure. Inspect the interior woodwork around the window frames for water staining or delamination.
  3. Rudder Play: The long keel and rudder configuration can develop play in the bushings over time. If possible, check for lateral movement in the rudder stock while the boat is hauled out.
  4. Deck Core: While LM Glasfiber was known for heavy-duty hand-laid hulls, the decks are sandwich-constructed. Use a plastic hammer to "tap-test" for dull thuds that might indicate moisture ingress or delamination around stanchion bases or the mast step.

Community & Resources

Owners of the LM 24 benefit from a highly dedicated community centered primarily in Northern Europe and the United Kingdom. The LM Owners Association serves as the definitive technical resource, providing a repository of original manuals, wiring diagrams, and a forum where owners discuss specific modifications, such as adding bow thrusters to assist with the long-keel's tricky docking maneuvers.

The Verdict

The LM 24 is a specialized vessel that excels as a "pocket" motor-sailer, offering a level of weather protection and build quality rarely seen in 24-foot boats.

Pros:

  • Weather Protection: The enclosed wheelhouse extends the sailing season into the shoulder months.
  • Build Quality: Robust Scandinavian construction that has aged significantly better than many contemporary mass-produced boats.
  • Livability: A clever layout that separates the galley from the sleeping quarters, providing a "big boat" feel.

Cons:

  • Sailing Performance: Poor upwind performance and slow speeds in light air.
  • Maneuverability: The long keel makes reversing in tight marinas a challenge for the uninitiated.
  • Size Constraints: While spacious for 24 feet, the lack of a separate enclosed head (toilet) on many units may be a deal-breaker for long-distance cruising.

Measurements

Construction & Hull

Construction Material
Fiberglass
Hull Type
Monohull Sailboat
Keel Type
Full
Rudder
1x Attached
Ballast
2205 lbs (Iron)
Displacement
5512 lbs
Water Capacity
24 gal
Fuel Capacity
24 gal

Dimensions

Length Overall (LOA)
23.62 ft
Waterline Length (LWL)
20.01 ft
Beam
8.27 ft
Draft
3.28 ft
Max Headroom
-
Air Draft
-
Hover over a measurement
IJPE FS LOALWL

Rig & Sails

Rig Type
Masthead Sloop
P (Main Luff)
-
E (Main Foot)
-
I (Foretriangle Height)
-
J (Foretriangle Base)
-
Forestay Length (est)
-
Sail Area
250 sqft

Calculations

Sail Area / Displacement (SA/D) Ratio
12.82
Ballast / Displacement Ratio
40
Displacement / Length Ratio (D/L) Ratio
307.13
Comfort Ratio
24.21
Capsize Screening Formula
1.87
Hull Speed
5.99 kn