Klipper 42 Sailboat Review, Specs, and Listings

Robin Chadworth-Musters/Alan Gurney·1978·Tyler Boat Works
Klipper 42 drawingBuilder drawing
Hull Type
Monohull · fin
Rig
Ketch
LOA
42' · 12.8 m
Disp.
16,500 lbs · 7,484 kg
First year
1978

Conceived during an era when fiberglass was still laid up with conservative, heavyduty laminates, the Klipper 42—also widely known as the Slipper 42—stands as a robust example of British boatbuilding from the late 1970s. Molded by the esteemed Tyler Boat Company in the United Kingdom, the vessel was designed by the naval architectural partnership of Robin ChadworthMusters and Alan Gurney. Tyler achieved early renown for producing thick, bulletproof GRP hulls, often delivering them as highquality structural packages for professional yards or fastidious amateur owners to complete. Consequently, while the structural envelope of every Klipper 42 is remarkably consistent, the interior joinery and overall fitout quality vary depending on the specific yard or owner who executed the final interior cabinetry. The vessel was built for serious offshore cruising, featuring traditional wineglass hull sections, a centercockpit layout, and an overall aesthetic that prioritizes seaworthiness and structural integrity over modern lightweight speed. Down below, the classic arrangement features a cozy main salon with a heavy wood table, a dedicated offshore navigation station, a forward Vberth, and a spacious aft owner's cabin accessed via a walkthrough passageway.

Measurements

Dimensions 01

Length Overall
42 ft
Length on deck
Waterline Length
30.33 ft
Beam
12.25 ft
Draft
6 ft
Maximum Headroom
Air Draft

Construction & hull 02

Construction
Fiberglass
Hull Type
Monohull
Keel Type
Fin
Rudder
1× Skeg-Hung
Ballast
7,163 lbs (Lead)
Displacement
16,500 lbs
Water Capacity
115 gal
Fuel Capacity
114 gal

Rig & sails 03

Rigging Type
Ketch
Mainsail luff
Mainsail foot
Foretriangle height
Foretriangle base
Forestay Length (estimated)
Sail Area
640 sqft

Calculations 04

Sail Area to Displacement Ratio
15.8
Ballast to Displacement Ratio
43.41
Displacement to Length Ratio
264.01
Comfort Ratio
26.79
Capsize Screening Ratio
1.93
Hull Speed
7.38 kn

Variations & Configurations

Because Tyler Boat Company frequently sold these yachts as structural component packages consisting of the molded hull, deck, and main bulkheads, buyers could tailor the deck plan and interior to their specific cruising goals. While a center-cockpit ketch configuration is by far the most common layout, some hulls were completed as yawls or even masthead cutters. Rig heights also vary; several hulls were completed with masts roughly ten percent taller than the standard specification—an modification recommended by Tyler's yard at the time to improve light-air performance—balanced by additional lead ballast poured into the keel cavity. The underwater profile is defined by a deep fin keel drawing six feet and a robust, skeg-hung rudder, a combination that provides the maneuverability of a split lateral plane while preserving excellent protection for the steering gear.

Sailing Performance & Handling

The Klipper 42 is characterized by a displacement-to-length ratio of 264.01, placing it squarely in the medium-heavy displacement category. This weight translates directly to physical momentum, giving the hull a highly predictable, sea-kindly motion that parts oncoming waves rather than slamming into them. The ballast-to-displacement ratio of 43.41 percent reveals an incredibly stiff boat that stands up well to its canvas as the breeze freshens. At the helm, the yacht tracks exceptionally well, and once the ketch or yawl rig is properly balanced, the boat can easily be sailed with minimal autopilot intervention.

With a sail-area-to-displacement ratio of 15.8, the Klipper 42 is not a light-wind racer and requires a respectable breeze to wake up. However, in Force 5 or higher, the design truly excels, offering a secure platform where the sail plan can be easily stepped down by dropping the mainsail and sailing comfortably under jib and mizzen alone. A capsize screening ratio of 1.93 confirms its inherent stability for transoceanic passages, while a comfort ratio of 26.79 ensures a gentle, fatigue-reducing motion during long ocean swells.

Known Issues & Triage

The most significant long-term vulnerability of the Klipper 42 lies in its deck construction. Tyler built the deck using a partial sandwich construction containing foam or balsa stiffening panels. Over decades of service, water can seep into this core around unsealed stanchion bases, cleat bolts, and chainplates, resulting in localized soft spots. Triage requires drilling a series of test holes through the top laminate to assess the moisture levels, allowing the core to thoroughly dry, and then injecting epoxy resin to re-bond the skin. In severe cases, the affected fiberglass skin must be cut away to replace decayed core material entirely.

Additionally, because many of these boats were originally finished with laid teak over the fiberglass decks, the fastening screws represent hundreds of potential water entry points. If the teak is lifting or worn thin, owners must face the labor-intensive task of removing the teak overlay, filling the screw holes, and re-skinning the deck with a non-skid coating.

Modernization & Upgrades

Many Klipper 42 models on the brokerage market still carry their original, heavy-iron propulsion systems, such as old BMC or Sole diesels. Modern owners frequently choose to repower these boats with modern, lightweight marine diesels, which dramatically improves fuel economy, reduces vibration, and shaves off unnecessary weight. Another common upgrade involves the electrical systems. Given the deep, protected bilge space, owners often install high-capacity lithium-iron-phosphate battery banks alongside hydrogenerators or solar arrays on custom stern arches to support modern live-aboard demands. For those tackling deck refits, replacing the original, leak-prone teak overlays with modern polyurethane non-skid paints has become the standard method to permanently dry out the subdeck.

The Verdict

The Klipper 42 is a heavily built, traditional offshore cruiser that offers fantastic security for sailors seeking a classic, go-anywhere vessel. While it lacks the speed of contemporary cruising yachts in light air, its heavy layup and comfortable motion make it an outstanding choice for long-distance passagemaking in rough conditions.

Pros

  • Heavy, hand-laid GRP hull from a highly respected British builder
  • Stiff, seaworthy motion with excellent directional tracking in heavy weather
  • Extremely secure cockpit and protected skeg-hung rudder
  • Highly customizable interior layout due to historic home and yard finishes

Cons

  • Sluggish light-air sailing performance
  • High probability of deck core rot around hardware and under teak overlays
  • Interior fit-out quality varies significantly between individual hulls
  • Engine bays often contain older, heavy diesels requiring replacement or major overhauls

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