Opus 34 Information, Review, Specs

Sailing Performance & Handling

The sailing characteristics of the Opus 34 vary significantly between the original masthead sloop and the later MK II fractional rig. The original design, featuring a masthead rig with approximately 38 square meters of sail area, is often characterized as a "heavy cruiser" with a displacement-to-length (D/L) ratio of roughly 341. This configuration prioritizes stability and a soft motion in a seaway over light-air acceleration. With a ballast ratio of 40% provided by a lead fin keel, the boat is remarkably stiff and tracks well, making it a reliable choice for short-handed crews.

The MK II variant, designed by Bent Juul Andersen, refined the performance profile by adopting a fractional rig with a larger sail area of approximately 44 square meters. This change drastically improved the boat's pointing ability and made the headsails more manageable for tacking. Owners and technical reviews, such as those historically documented in Nordic sailing archives, note that while the boat is not a "greyhound" by modern standards, its hull is efficient enough to reach a theoretical hull speed of 6.6 knots with ease. Its motion comfort ratio of 26.5 suggests a vessel that sits "in" the water rather than "on" it, providing a dry, predictable ride even when the wind freshens.

Interior Comfort & Variations

The interior of the Opus 34 is a testament to traditional Danish craftsmanship, typically finished in high-quality mahogany or teak. The layout is conventional for a 34-foot yacht of the period: a forward V-berth for the owner, a central saloon with a folding table, and a dedicated navigation station. The galley is usually located to the port side of the companionway, featuring a deep sink and an icebox or refrigerated unit.

One of the more unique aspects of the Opus 34’s accommodation is its berth capacity. Depending on the configuration, the boat can accommodate between six and seven people. This is achieved through the use of pilot berths (søkøjer) situated above the main saloon settees and a quarter berth tucked away aft. While this maximizes sleeping space, modern owners often repurpose these pilot berths for storage during long-distance cruising. The use of a balsa core in the deck and hull sandwich construction provides excellent thermal and acoustic insulation, which significantly reduces condensation—a common plague in the humid climates of Northern Europe.

Popular Mentions & Media

The Opus 34 gained recognition in long-distance cruising circles through the voyages of the vessel "Taranga," owned by Søren Dahl. This specific boat was used for a successful circumnavigation, proving the model's structural integrity and offshore capability. Historical Danish yearbooks, such as the KDY Aarbog from the early 1970s, frequently listed the Opus 34 as a premier example of the region's burgeoning GRP industry, often comparing its build quality to the early Swan or Hallberg-Rassy models of that generation.

Known Issues & Buyer’s Checklist

Prospective buyers should approach the Opus 34 with the diligence required for a classic GRP vessel of its age.

• Deck Core Integrity: Because the Opus 34 utilizes a balsa-wood sandwich construction in the deck, any unsealed hardware penetrations over the decades can lead to water ingress and core rot. A thorough "tap test" or moisture meter reading around stanchions and cleats is essential.
• Original Engine Condition: Many units were originally fitted with 16 HP SABB or early Volvo Penta diesel engines. While these were reliable workhorses, parts are becoming increasingly difficult to source. Check for excessive smoke or vibration, which may indicate a need for a costly repower.
• Chainplate Sealing: Like many boats of this era, the chainplates pass through the deck. Over time, the bedding compound fails, allowing saltwater to reach the wooden bulkheads below. Inspect the interior mahogany for "weeping" stains or soft spots.
• Keel Bolts: Given the boat’s age and its lead fin keel, the keel-to-hull joint (the "smile") should be inspected for signs of movement or corrosion in the stainless steel bolts.

Community & Resources

While there is no singular international association for the Opus 34, the boat remains a staple in the Dansk Forening for Ældre Lystfartøjer (Danish Association for Older Pleasure Craft) and various Nordic cruiser-racer forums. Owners often find technical support through broader Nissen or Andersen design groups in Germany and Denmark.

The Verdict

Pros:

• Exceptional Build Quality: Oversized GRP laminates and high-grade lead ballast.
• Sea-Kindliness: High motion comfort ratio makes it an ideal choice for offshore passages.
• Insulation: Balsa sandwich construction provides superior warmth and reduces noise.
• Interior Joinery: Handcrafted mahogany interiors that age better than modern liners.

Cons:

• Performance in Light Air: The original masthead versions can feel underpowered in light winds.
• Maintenance of Age: Balsa core and older engines require vigilant upkeep.
• Draft: At roughly 1.7 meters (5.6 feet), it may limit access to extremely shallow coastal anchorages.