Sirius 35 DS Information, Review, Specs

Sailing Performance & Handling

Under sail, the Sirius 35 DS defies the stereotype of the sluggish deck saloon. With a displacement of approximately 7.2 tonnes and a ballast ratio nearing 32%, the yacht is a stiff, stable platform that carries its momentum well through a chop. The hull features a modern, full-bodied shape with a nearly vertical stem to maximize the waterline length, a detail noted in technical assessments by Sailing Today as contributing to its respectable hull speed.

The yacht is typically rigged as a fractional sloop with a self-tacking jib, though many owners opt for an overlapping genoa or a "Solent" rig for better light-wind performance. Handling is characterized by its versatility; the 35 DS is available with a deep fin keel (1.98m), a shallow fin (1.60m), twin keels for drying out, or a swing keel for exploring estuaries. According to editorial reviews in Yachting Monthly, the twin-keel version tracks surprisingly well upwind, losing only a few degrees of pointing ability compared to the deep-fin variant. The twin-rudder configuration on some models ensures the yacht remains controllable even when heeled, providing a level of responsiveness rarely found in heavy-displacement cruisers.

Interior Comfort & Variations

The interior of the Sirius 35 DS is the vessel’s primary differentiator. The "one-level living" concept brings the galley, navigation station, and saloon seating into the upper deckhouse, offering 360-degree panoramic views of the horizon. This design philosophy significantly reduces the "basement" feel of traditional monohulls and allows the off-watch crew to monitor the surroundings in comfort.

Sirius offers several distinct layout variations. The most popular is the two-cabin version, which features a sprawling master cabin forward and a second double cabin tucked beneath the saloon. A hallmark of the 35 DS is the inclusion of a dedicated "technical room" or workshop, often accessible through the heads or via a cockpit locker. This space allows for organized storage of tools and spare parts, a rarity on a boat of this size. Materials are of the highest caliber, with choices of mahogany, cherry, or oak, all finished with a craftsmanship that reflects the shipyard's 75-strong team of specialist boat builders. Because the boat is built on the same philosophical platform as its siblings—the smaller Sirius 310 DS and the flagship Sirius 40 DS—owners moving between models will find consistent design cues, such as the ingeniously hidden storage compartments and the use of every available cubic centimeter of bilge space.

Popular Mentions & Media

The Sirius 35 DS has garnered significant attention in the European yachting press for its innovative use of space. It was famously put through a "24-hour test" by Yachting Monthly, where reviewers lived aboard to test the ergonomics of its multi-level interior. The model is frequently cited in "Best Bluewater Cruiser" lists for its robust construction and the safety afforded by its internal steering position, which allows for heavy-weather navigation without exposure to the elements.

Known Issues & Buyer’s Checklist

Potential buyers of a pre-owned Sirius 35 DS should focus their inspection on the yacht's complex systems and custom additions.

1. System Density: Because Sirius packs a significant amount of machinery (generators, watermakers, heaters) into a 35-foot frame, access to certain pumps and through-hull fittings can be tight. A buyer should verify the service history of all concealed equipment.
2. Deck Saloon Glazing: The large panoramic windows are structural and essential to the boat's appeal. Inspect the seals and the integrity of the toughened glass for any signs of delamination or leaks, though the builder uses high-specification adhesive techniques.
3. Keel Attachment: On twin-keel or swing-keel variants, inspect the reinforcement areas around the keel stubs. While Sirius-Werft is known for over-engineering these sections, any grounding incidents can leave tell-tale signs in the interior floor grid.
4. Rig Tension: The self-tacking jib setup puts specific loads on the forestay and the forward track. Ensure the track is securely fastened and that the blocks show no signs of deformation from high-load sailing.

Community & Resources

The primary resource for owners is the manufacturer itself, Sirius-Werft GmbH, which maintains an unusually close relationship with its clients. Torsten Schmidt, the managing director, is known for providing direct technical support to owners worldwide. While there is no large independent "class association," the Sirius community is active through regional cruising clubs in Germany and the UK, and the official Sirius-Werft website provides extensive documentation on legacy models and technical specifications.

The Verdict

The Sirius 35 DS is an uncompromising cruising machine that prioritizes livability and build quality over raw racing speed. It is a niche vessel designed for the sailor who values the ability to watch the world go by from a warm, dry saloon while navigating challenging coastal or offshore waters.

Pros:

• Unrivaled interior volume and 360-degree visibility.
• Exceptional build quality and semi-custom joinery.
• Versatile keel options for various cruising grounds.
• Category A (Ocean) rating provides immense peace of mind.

Cons:

• Significantly higher price point than mass-produced yachts of similar length.
• Dense equipment layouts can make some maintenance tasks labor-intensive.
• Heavy displacement means it requires a breeze to truly "wake up" under sail.