L 23 — Information, Review, Specs

Lars Olsen·1975 – 1988·~405 hulls·Peter Bjørn Olsen
L 23 drawingBuilder drawing
Hull type
Monohull · fin
Rig
Fractional Sloop
LOA
23.56' · 7.18 m
Displ.
3,527 lbs · 1,600 kg
First year
1975

The L 23 is a quintessential Danish cruiserracer designed by Lars Olsen in 1975. Conceived during a golden era of Scandinavian boat building, the vessel was intended to bridge the gap between a pure racing keelboat and a familyfriendly weekend cruiser. With over 400 hulls produced, primarily in Denmark, it has established itself as one of the most successful "small keelboat" classes in Northern Europe. The design features a sleek, lowprofile coachroof, a fractional rig, and a moderatedisplacement hull that favors agility and responsiveness. While it lacks the interior volume of modern highvolume cruisers, its enduring popularity is a testament to its balanced sailing characteristics and the robust support of a dedicated class association, the L23 Klubben, which maintains the official class rules and technical archives.

Measurements

Dimensions 01

LOA
23.56 ft
LWL
19.78 ft
Beam
7.87 ft
Draft
4.27 ft
Max headroom
-
Air draft
-

Construction & hull 02

Construction
Fiberglass
Hull type
Monohull
Keel type
Fin
Rudder
1× Spade
Ballast
1433 lbs (Lead)
Displacement
3527 lbs
Water
-
Fuel
-

Rig & sails 03

Rig type
Fractional Sloop
P · main luff
27.56 ft
E · main foot
7.55 ft
I · fore ht.
27.23 ft
J · fore base
9.35 ft
Forestay (est)
28.79 ft
Sail area
231 sqft

Calculations 04

SA/D ratio
15.95
Ballast/Disp.
40.63
D/L ratio
203.46
Comfort ratio
16.69
Capsize screening
2.07
Hull speed
5.96 kn

Sailing Performance & Handling

The L 23 is widely regarded for its lively and forgiving sailing manners. Equipped with a 7/8 fractional rig and a relatively high sail area-to-displacement ratio for its era, the boat excels in light-to-moderate winds. Its fin keel and spade rudder provide a high degree of maneuverability, making it a favorite for short-handed sailing or tight-quarters racing. Owners frequently note that the boat "punches above its weight" when sailing upwind, maintaining a steady groove with minimal weather helm if the sails are properly trimmed.

According to technical documentation from the L23 Class Association, the boat was designed to be stiff enough for offshore coastal passages while remaining sensitive enough for club racing. The displacement of approximately 1,450 kg (roughly 3,200 lbs) allows it to accelerate quickly out of tacks. Unlike many of its contemporaries that utilized heavier full keels, the L 23’s fin keel design offers a more modern, "sporty" feel. It is often compared to the H-Boat or the Albin Express in terms of performance, though many find the L 23 slightly more manageable for a novice crew due to its predictable motion in a seaway.

Interior Comfort & Variations

For a 23-foot vessel, the L 23 offers a remarkably functional, albeit compact, interior. The layout is optimized for four adults, featuring a V-berth forward and two longitudinal settee berths in the main cabin. Because the boat prioritizes a low center of gravity and aerodynamic profile, there is no standing headroom; however, the seated ergonomics are well-considered for dining or chart work.

The interior finish typically reflects the high standard of Danish craftsmanship from the late 1970s and 80s, often utilizing teak or mahogany veneers. A small, slide-out galley is usually located near the companionway, allowing for basic meal preparation. Over the production run, variations were minimal to maintain one-design integrity, though later models may feature updated electrical panels or modified cabinetry. Unlike larger production series, there are no "sibling" hull variations (such as a 3-cabin version), as the 7.18-meter hull length is dedicated entirely to a singular, efficient layout. The focus remains on providing a "dry" cabin environment that serves as an effective base for coastal cruising.

Known Issues & Buyer’s Checklist

Prospective buyers should approach the L 23 with a focus on structural integrity typical of 40-year-old fiberglass boats. While the hulls are generally considered overbuilt by modern standards, specific areas require close inspection:

  • Rudder Assembly: The spade rudder and its bearings are known wear points. Check for excessive play in the tiller and inspect the rudder stock for signs of osmotic blistering or structural fatigue.
  • Deck Core: Like many boats of this vintage, the deck is a sandwich construction. Use a phenolic hammer to check for delamination around high-load areas, particularly the chainplates and the mast step.
  • Keel-to-Hull Joint: Inspect the keel bolts and the "smile" at the leading edge of the keel. While the L 23 does not have a widespread reputation for keel failure, the sealant in the joint often requires replacement after decades of service to prevent seepage.
  • Windows and Portlights: The original acrylic windows are often crazed or prone to leaking. Many owners choose to replace these with modern bolted-through or bonded units to ensure a watertight cabin.

Community & Resources

The L 23 benefits from one of the most active owner communities in Scandinavia. The L23 Klubben provides an exhaustive repository of technical manuals, tuning guides, and historical data. This association is instrumental in organizing annual championships and maintaining the one-design status, which helps preserve the resale value of the vessels. The club also hosts a technical forum (accessible through their main site) where owners discuss specific maintenance projects and rigging upgrades.

The Verdict

The L 23 remains an excellent entry-level keelboat for those who value sailing performance and classic aesthetics over modern "condo-maran" volume. It is a purist’s boat that rewards good trimming and offers a sense of security rarely found in contemporary boats of the same size.

Pros:

  • Excellent light-wind performance and agility.
  • Strong one-design class support ensures longevity and parts availability.
  • High-quality Danish construction and timeless lines.
  • Easily managed by a single-handed sailor.

Cons:

  • Lack of standing headroom limits long-term liveability.
  • Small interior is cramped for families with older children.
  • The aging fleet requires diligent inspection for deck and rudder wear.

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