Danboat 33 Information, Review, Specs

Make
Danboat
Model
33
Builder
Danboat /Sanderson Plastic Boats
Designer
Philip Rhodes
Number Built
Production Year(s)
1960 - ??

The Danboat 33 is a classic offshore cruiser that represents a significant chapter in the golden era of Sparkman & Stephens (S&S) designs. Launched in the late 1960s and produced into the early 1970s by Danboat in Slagelse, Denmark, this model is the European expression of the S&S Design No. 2013. While many American sailors recognize this hull as the North Star 1000, the Danboat 33 was finished with a distinct emphasis on Scandinavian craftsmanship and robust construction suitable for the demanding conditions of the North Sea. It features the quintessential S&S aesthetic of the period: a graceful sheer line, relatively narrow beam, and a balanced overhang at the bow and stern that provides both beauty and functional buoyancy in a seaway.

Sailing Performance & Handling

The Danboat 33 is widely celebrated for its "on rails" tracking ability, a hallmark of Sparkman & Stephens designs from this period. With a high ballast-to-displacement ratio approaching 40%, the vessel is remarkably stiff and stands up well to its canvas as the breeze freshens. The underwater profile features a swept-back fin keel and a skeg-hung rudder, a configuration that offers a superior balance between reduced wetted surface area and directional stability compared to the full-keel cruisers that preceded it.

In terms of raw numbers, the boat’s displacement of approximately 10,000 pounds on a waterline of roughly 23.5 feet gives it a high displacement-length ratio, which translates to a powerful, albeit traditional, motion. It does not "hobby-horse" in a chop as much as lighter modern designs might. Owners often report that while the boat is not a light-air flyer, it excels in 15 to 25 knots of wind, where its heavy-weather pedigree allows it to maintain high average speeds with a sense of security. The narrow beam (approximately 9' 2") makes for excellent upwind pointing angles, though it does result in a "wetter" ride on the foredeck when punching through square waves.

Interior Comfort & Variations

The interior of the Danboat 33 reflects the high standards of Danish cabinetry prevalent in the 1970s. The layout is a traditional offshore arrangement designed for safety at sea rather than maximum dockside volume. Most hulls feature a forward V-berth, a head compartment separating the mast area from the main salon, and a central living area with a folding table. Because the Danboat 33 shares its hull architecture with the North Star 1000, the primary variations are found in the joinery and deck molding; the Danboat version typically features more extensive use of solid teak and high-quality veneers compared to its North American sibling.

The galley is usually positioned near the companionway for ventilation and ease of use while underway, featuring deep sinks and adequate bracing for the cook. Headroom is functional for the era, generally around 6' 1", though it tapers moving forward. Storage is abundant, with lockers tucked behind the settee backs, taking advantage of the deep hull sections. While it lacks the wide-open "great room" feel of contemporary 33-footers, the Danboat 33 offers a cozy, secure environment that feels appropriate for long-distance passage-making.

Known Issues & Buyer’s Checklist

Prospective buyers should approach a Danboat 33 with a focus on the structural realities of 50-year-old fiberglass construction. While the hulls are generally overbuilt by modern standards, specific areas require scrutiny:

  • Deck Core Integrity: Like many boats of this vintage, Danboat used balsa or plywood coring in the decks. Moisture ingress around stanchion bases, chainplates, and the mast step is common. Soft spots should be identified using a phenolic hammer or moisture meter.
  • Chainplate Knees: The load from the rig is transferred to the hull via fiberglass-encapsulated knees. These should be inspected for signs of delamination or "weeping" rust, which indicates the internal stainless steel tangs may be corroding.
  • Rudder Bearing Wear: The skeg-hung rudder design is robust, but the bronze or composite bushings at the base of the skeg and the cockpit floor can wear over decades, leading to vibration or "slop" in the steering.
  • Osmotic Blistering: While Danboat utilized high-quality resins, these boats were built before the widespread use of vinylester resins. A haul-out inspection for hull blisters is essential, particularly for boats that have spent their lives in warmer waters.
  • Engine Serviceability: Many original units were equipped with Volvo Penta MD-series engines. While legendary for their longevity, parts are becoming increasingly scarce and expensive, and many Danboat 33s on the market have already undergone (or are due for) a repower with a modern Yanmar or Beta Marine diesel.

Community & Resources

The primary resource for technical data and historical context is the Sparkman & Stephens association and archives. Because the design is part of a "family" of hulls (including the North Star 1000), technical solutions for one often apply to the other. Owners frequently congregate in broader S&S design groups to discuss rigging specifications and original blueprints.

The Verdict

The Danboat 33 is an "honest" sailboat that prioritizes seaworthiness and aesthetic grace over interior volume and light-air speed. It remains an excellent choice for a solo sailor or a couple looking for a classic offshore-capable vessel on a modest budget.

Pros:

  • Exceptional S&S-designed tracking and heavy-weather handling.
  • High-quality Scandinavian interior joinery that ages well.
  • Strong, hand-laid GRP construction that inspires confidence in blue water.
  • Timeless, classic lines that attract admiration in any harbor.

Cons:

  • Relatively narrow interior by modern standards, lacking a private aft cabin.
  • Prone to deck core moisture issues if hardware has not been re-bedded.
  • The original engine and plumbing systems likely require significant modernization.
  • Limited light-air performance compared to modern fin-keel designs.

Measurements

Construction & Hull

Construction Material
Fiberglass
Hull Type
Monohull Sailboat
Keel Type
Fin
Rudder
1x —
Ballast
3750 lbs
Displacement
11500 lbs
Water Capacity
-
Fuel Capacity
-

Dimensions

Length Overall (LOA)
33 ft
Waterline Length (LWL)
23.2 ft
Beam
8.75 ft
Draft
4.89 ft
Max Headroom
-
Air Draft
-
Hover over a measurement
IJPE FS LOALWL

Rig & Sails

Rig Type
Masthead Sloop
P (Main Luff)
33.98 ft
E (Main Foot)
14.6 ft
I (Foretriangle Height)
39 ft
J (Foretriangle Base)
10.58 ft
Forestay Length (est)
40.41 ft
Sail Area
450 sqft

Calculations

Sail Area / Displacement (SA/D) Ratio
14.13
Ballast / Displacement Ratio
32.61
Displacement / Length Ratio (D/L) Ratio
411.14
Comfort Ratio
37.81
Capsize Screening Formula
1.55
Hull Speed
6.45 kn