Sirius 40 DS

Sirius 40 DS

5 years after the first construction of the Sirius 35 DS, we would like to proudly present our new flagship – the Sirius 40 DS

Never before have we been able to offer you as much as we can on our 40DS. The 40DS is for those who don’t want to compromise; until now on a Sirius, you could have either a large workshop or a large central cabin, with our 40DS you can have both!

The large saloon will comfortably seat six adults around the extending dining table, everyone can admire the surroundings thanks to the large windows that provide 360-degree views. She can offer three double cabins or the onboard space can be honed and crafted to the needs of you and your crew.

Like all of our yachts, the 40DS gives you the interior space you’d expect on a larger yacht, in the 40 that’s an extra 7ft/2.1m more floor space.

She is designed for long-distance, extended cruising in mind and to make sure she’s the best liveaboard cruiser we could make Torsten Schmidt, owner of Sirius, spent seven weeks living onboard, non-stop. In both onboard and deck stowage, she offers more than you’d expect, and all of it can be personalised to you.

Layout options

Click the buttons below to see the layouts that are currently available. Every Sirius yacht is custom built to the specific requirements of the owner, so that your ideas about the design and equipment can be fully incorporated. How would you design yours?

5 berth
Sirius 40 DS – 5-berth – With V-bed in front cabin – 2 heads with showers
Sirius 40 DS master bed

Quality of life on board a sailing yacht today demands next to a high standard of safety and comfort, a spacious and airy feel with plenty of light and visibility. A clean and fresh design, clever use of storage, headroom of 1.95m or more and other useful details are balancing life style and functionality.

In terms of use of space and feeling of luxury the Sirius 40 DS has become a class of its own. Because of the double use of space with the saloon, galley and navigation area in the raised position and the mid-ship cabin, the workshop and the deep storage spaces in the galley below there is more room available than you would expect to find on any 47-foot yacht.

Individual design solutions

With our 31 foot model we already offer more than 14 different interior designs, so you can imagine how many possibilities we have with the 40 foot model.

It is a pure semi-custom boat, designed according to your individual wishes. So far, there have been requests for more than 8 different designs, from 2 + 2 to 6 + 2 berths as well as a version with a separate additional lounge in the lower level or an extra office room. The saloon can be converted into an additional double berth by the optional lowering saloon table.

The drawings shown here can be rearranged with their bed shapes and floor plans, almost at will. But also completely different designs are conceivable. Feel free to contact us! Our boatyard internal design team is looking forward to bring your ideas to life.

In terms of use of space and feeling of luxury the Sirius 40 DS has become a class of its own

During the development of the boat, in order to offer more design flexibility, we created the seating area in the saloon with a large shelf to the front saloon windows in order to be able to move the settee forward for different layouts. In the first 3 layouts this space caters for the headroom of the underlying mid ship cabin and leads to the luxurious space and headroom.

In the two versions shown here at the far right is a slightly shortened sitting area installed further forward in the boat. This produces space for a comfortable entrance on port between the companionway and the settee, via a door and a sliding hatch, to an aft cabin. The workshop is then accessed through a door directly from this cabin.

If you prefer a swing keel version, the last two versions are perfect. In the area of the saloon, navigation and galley you don’t lose any space with the swing keel version. Just in the mid ships area below the mast it is necessary to make room for the swing keel box which is an integral laminated part of the hull. By comparison with nearly all other designs on the market, this is a “real” swing keel, moving all of the ballast up and down in the centreboard. This is a very reliable and safe, yet complex technology.

Sirius 40 DS twin keel
The sailing performance of our famous twin keel version are the same as on our fixed keel yachts
If your focus is not particularly on reducing your draft to an absolute minimum and you are more interested in drying out, we would recommend our famous twin keel version. Without the need to maintain complex technology and without any compromises in the interior, the sailing performance and tacking angles are the same as on our fixed keel yachts – as many tests have confirmed.

The 4 cabin version

With the luxury suite in the forecabin and en-suite bathroom, and the amazing mid-ship cabin under the saloon with its adjoining shower & toilet, it is the perfect combination for 4 people. The galley is longer and the navigation area is further to the rear than in other versions. Behind the “captain chair” is a huge oilskin locker and another locker accessible from above.

The 6 cabin version

Two luxurious double cabins and a comfortable aft cabin in a 12-metre yacht, without compromising the saloon to achieve it. Because of typical sea water sounds and limitations of a deep cockpit at the stern, our main emphasis had been on the design of the front and mid-ship cabins. So even we were surprised at how generous, bright and comfortable, the diagonally mounted aft cabin has succeeded. With the comfortable headboard it forms a cosy “chill-out” area, from which one can comfortably read or watch TV or have a direct look into the stars above.

Look inside

Click the picture below to take a ‘virtual tour’ of the Sirius 40 DS. By clicking on the flashing circles you step into a different level allowing you to look around the whole yacht. Click on the camera icons to see more pictures.

Sirius 40 DS Brochure

We can send you our extensive brochure by post or you can download a pdf version which you can view on screen or print out yourself.

Technical data


  • LOA: up to 12.90 m
  • L Hull: 11.99 m
  • LWL: 11.17 m
  • Beam: 4.08 m
  • Beam Hull: 4.00 m
  • Ballast approx: 3.45 t
  • Displacement: 11 t


  • Single fin: 2.30 m (Standard) 2.00 m (Optional) / 1.75 (Optional)
  • Twin keel (optional): 1.45 m
  • Swing keel (optional): 0.95-2.50 m


  • Mainsail (standard): 49.0 m2
  • Self-tacking jib: 32.3 m2 (standard)
  • Genoa I: 63.6 m2
  • Genoa II: 55 m2
  • Spinnaker: 160.0 m2
  • Furling Gennaker: 136.4 m2
  • Furling Drifter: 92.7 m2
  • Sail area/displacement ratio: with selftacking jib 4.0, with Genoa 4.8
  • Mastheight above water: 19.80 m
  • Carbon-performance-rig possible

Standard equipment

Hull and deck: Made in hand-laid GRP. The hull is built exceptionally strongly, above the waterline with vacuum-adhered Corecell M-foam sandwich, in a one-piece mould with vinylester-gelcoat and resin, fibreglass mats and rovings, which are specially developed for high-quality boat building. Parts of the deck are also built-in foam-sandwich-construction. Hull-deck connection and bulkheads are laminated from all sides.

Underwater finish: 1 layer epoxy primer and hard antifouling, 2 waterline stripes in the colour of your choice.

Keel: approx. 3.45 t cast iron (optional: hardened lead bulb), glued and screwed to the hull with fourteen 20 mm stainless steel bolts through steel reinforcement. The forces are redistributed by massively laminated bottom floor sections.

Rudder: pre-balanced rudder blade with half-skeg; wheel steering.

Deck coating: Solid teak deck for side decks, upper deck and in the cockpit, on the coamings and bathing platform, screwless, fully vacuum bonded into a bed of Polyurethane (GRP-deck with antiskid and alternative materials for example “flexi-teak” possible).

Deck fittings:
Bow pulpit, stern pushpit, guard rail with 10 stanchions in stainless steel and 4 life lines, strong solid wooden rubbing streaks, bow fitting with anchor roller and electric anchor windlass in the anchor locker, 25 kg galvanized Rocna-anchor with 50 m of 10 mm calibrated chain; self-tacking-jib system; halyards and trim lines are led back to the cockpit through halyard stoppers into a halyard box, 1 self-tailing 40 winch; closable permanent ventilator in the anchor locker, 2 stainless steel bathing ladders (1 telescopic in a drawer), 6 cleats, 6 skylights which are recessed-mounted into the deck; plexiglass sliding-hatch in the saloon; all Deck-saloon windows are made of safety-glass recessed, glued-in and screwed through a solid aluminium frame structure (option: double glazing). Optional windows in the hull are made from bullet-proof polycarbonate, frameless glued. There is an opening window above the galley and optionally also for the seating area. Gas box inside the big deck storage behind the anchor locker.

Cockpit: Teak laid benches, coaming and cockpit floor; 2 cubby holes in the cockpit, 2 big locker seats with up to 4500 litres of storage volume. Door in fold-down transom. Big cockpit table with fold-down wings and box.

Want to know more? We will gladly answer any questions you might have about our yachts

Galley: Two-burner half-gimbaled gas stove with oven, 130-litre refrigerator with icebox (optional without and 41l icebox extra), stainless steel double sink unit, pressurized water system, 14 drawers, 1 upper shelf with LED-lights, 2 huge waste boxes, deep bottom shelves with approximately 1600 litres of storage.

Heads: two heads, one with shower (option both); manual sea toilets, large wash basins, mirrors and large cupboards on top and bottom. Waste water tanks (from 60 + 100 litres upwards), with overboard-discharge and outlet for dockside emptying.

Water system: water pressure system, 45-litre immersion heater via engine and 240 V, water tank from 400 litres upwards with tank display.

Engine: Volvo-Diesel D2-55, four cylinders, 40.43 kW (55 HP), double cooling system, seawater filter, saildrive with folding propeller, generator 14V – 115 A, tacho, single lever engine throttle; diesel tank, from 200 litres upwards with tank display and pre-filter.

Electric device: Control-centre in the navigation corner with main switches and fuse boxes, compass, wind, log and lot; complete navigation lights with deck light, two ceiling lamps each in heads and corridor, 3 lamps in the saloon, 3 lamps in the galley, 2 reading lamps and 2 ceiling lamps in both cabins, 2 workshop lights; 1 starting battery (70 Ah) and 3 consumption batteries (total of 300 Ah) with separate electric circuit. Shore connection with 50 A charger.

Cushions: 10 cm foam material with high-quality fabric covers, ergonomically shaped.

Rig: 2-spreader Selden rig with furling forestay, self-tacking jib system, adjustable backstay with winch handle tensioner, 2 upper shrouds, 2 middle shrouds, 2 lower shrouds; 1 main halyard, 1 jib halyard, 1 reserve halyard on the mast; main boom with 2 single line reefing-systems, kicking strap; all active halyards and trim lines are led back to the cockpit. Mast and boom are made out of aluminium.

1 set of sails: including 32.3 m² self-tacking jib, main sail 49.0 m² with 2 reefing lines as well as jib and main sheets.

We reserve the right to change the construction and the standard equipment. The drawings, pictures and text also show special designs and options. Typing errors reserved.

Sirius 40 DS Brochure

We can send you our extensive brochure by post or you can download a pdf version which you can view on screen or print out yourself.

Sirius Yachts logo white

General Manager – Torsten Schmidt
Ascheberger Straße 68
24306 Plön/Holstein

Tel: 0049 – 4522 – 744 61-0

Fax: 0049 – 4522 – 744 61-29

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