North Sea 24 — Information, Review, Specs

Holman & Pye·1963·Upham's/Tucker Brown &Co.
Approximate drawing

Hover a measurement to read its value

Hull type
Monohull · full
Rig
Masthead Sloop
LOA
31' · 9.45 m
Displ.
12,900 lbs · 5,851 kg
First year
1963

The North Sea 24 stands as a quintessential example of mid20thcentury British yacht design, emerging from the historic J.W. & A. Upham shipyard in Brixham. Designed by the prolific naval architect Alan Buchanan, this 24foot cruiser was conceived during an era when "pocket cruisers" were expected to handle the rigorous, often unforgiving conditions of the English Channel and the North Sea. Unlike the lightweight, massproduced fiberglass yachts that followed, the North Sea 24 was primarily a carvelbuilt wooden vessel—typically featuring mahogany or teak planking on robust oak frames—reflecting the Upham yard's deeprooted heritage in constructing durable fishing trawlers. While small in stature, the boat’s heavy displacement and traditional lines embody a "goanywhere" philosophy that remains highly regarded among classic boat enthusiasts today.

Measurements

Dimensions 01

LOA
31 ft
LWL
24 ft
Beam
9 ft
Draft
5.58 ft
Max headroom
-
Air draft
-

Construction & hull 02

Construction
Wood
Hull type
Monohull
Keel type
Full
Rudder
1× Transom-Hung
Ballast
- (Iron)
Displacement
12900 lbs
Water
-
Fuel
-

Rig & sails 03

Rig type
Masthead Sloop
P · main luff
-
E · main foot
-
I · fore ht.
-
J · fore base
-
Forestay (est)
-
Sail area
437 sqft

Calculations 04

SA/D ratio
12.71
Ballast/Disp.
D/L ratio
416.59
Comfort ratio
40.92
Capsize screening
1.54
Hull speed
6.56 kn

Sailing Performance & Handling

The sailing characteristics of the North Sea 24 are defined by its Alan Buchanan pedigree, a designer renowned for creating balanced, sea-kindly hulls. With a traditional long keel and a heavy displacement-to-length ratio, the boat exhibits exceptional directional stability, or "tracking." This makes it an ideal platform for single-handed sailing or long-distance coastal hops where a steady helm is preferred over high-speed carving.

Under sail, the North Sea 24 is not a light-air performer; it requires a decent breeze to overcome its substantial wetted surface area. However, as the wind freshens, the boat’s stiffness becomes its primary asset. It carries its canvas well into higher wind ranges, maintaining a predictable motion in a seaway that often surprises those used to more modern, flatter-bottomed designs. According to historical design notes from the Alan Buchanan archives, the hull’s deep forefoot helps it punch through choppy water without the "slamming" common in modern fin-keelers. Owners often describe the handling as "deliberate," requiring proactive sail changes but rewarding the crew with a sense of security even when the whitecaps appear.

Interior Comfort & Variations

The interior of the North Sea 24 is a masterclass in the efficient use of limited cubic volume, though it remains a vessel of its time regarding headroom and luxury. The layout typically features a classic four-berth arrangement: a V-berth in the forepeak and two longitudinal settees in the main saloon. Given the boat's 24-foot length and narrow beam, standing headroom is generally restricted to the companionway area, with a "sitting-only" environment throughout the rest of the cabin.

Materials are almost exclusively traditional, with extensive use of varnished hardwoods and white-painted bulkheads to brighten the compact space. The galley is rudimentary, often consisting of a small spirit or gas stove and a modest sink, suitable for coastal weekend cruising rather than extensive live-aboard use.

Several variations exist within the North Sea 24 lineage, primarily due to the bespoke nature of Upham’s builds. While many were built to the standard cruiser specification, some were commissioned with slightly different coachroof profiles or cockpit layouts to suit the original owner's preferences. It is also important to note the "sibling" designs by Buchanan, such as the Spartan and the Viking classes, which share similar hull DNA but vary in overall length and displacement.

Known Issues & Buyer’s Checklist

Prospective owners of a North Sea 24 must approach the purchase with the specialized mindset required for vintage wooden vessels. Because these boats were built by Upham using traditional methods, the primary concerns are structural rather than mechanical.

  • Fastening Integrity: Many North Sea 24s were built with copper nails and rove or silicon bronze screws. Over decades, these can "weep," leading to loose planks. A surveyor’s hammer test and inspection of the internal frames for "nail sickness" is mandatory.
  • The Stem and Stern Post: Moisture can often trap in the end grain of the stem or the stern post, leading to localized rot. Check these areas specifically, as well as the horn timber above the rudder post.
  • Deck-to-Hull Joint: If the vessel features a marine plywood deck (often sheathed in canvas or fiberglass), water ingress at the stanchion bases or the toe rail can lead to core rot in the deck and potential softening of the top-most hull planks (the sheerstrake).
  • Chainplates: Given the boat’s age, the stainless steel or bronze chainplates should be pulled and inspected for crevice corrosion, especially where they pass through the deck.

Community & Resources

While there is no longer an active manufacturer support network, the community surrounding the North Sea 24 is tethered to the broader Alan Buchanan design circle and the Brixham maritime heritage groups. The Old Gaffers Association (OGA) and the Classic Boat community often feature North Sea 24s in their registries and events. Technical guidance is frequently found through the Alan Buchanan design archives, which preserve the original lines and construction plans for many of his mid-century masterpieces.

The Verdict

The North Sea 24 is a "small ship" in the truest sense, offering a level of seaworthiness and aesthetic grace that is increasingly rare in the sub-25-foot category. It is a vessel for the traditionalist who prioritizes the soul of a wooden hull over the convenience of modern plastics.

Pros:

  • Exceptional Seaworthiness: Capable of handling coastal offshore conditions that would deter most 24-footers.
  • Timeless Aesthetics: The Buchanan-designed lines and Upham craftsmanship ensure the boat is a focal point in any harbor.
  • Predictable Handling: The long keel provides excellent tracking and a stable motion in heavy seas.

Cons:

  • High Maintenance: As a wooden vessel, it requires an annual commitment to painting, varnishing, and structural monitoring.
  • Performance Limits: Relatively slow in light winds and less maneuverable in tight marinas compared to fin-keel designs.
  • Confined Living: Limited headroom and beam make it best suited for solo sailors or couples for short durations.

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