Seller's Description
1975 Dufour 34 Excellent sailing boat built by iconic French designer Michel Dufour and a larger version of the very successful Arpege 30. Dufour has an excellent track record that stands for more than 50 years. They are still making boats and remained building boats when others have folded. SIREN is a turnkey cruiser / racer with a Disp./Len ratio of 299.59 which makes her a safe boat for blue water adventures. She has been cruised to Mexico several times by the prior owner. This boat is in great condition and very clean. New cushion covers, interior in excellent condition, new head, all thru hulls in excellent condition, new bilge pump, new thru hull hoses replaced, swim ladder, Chart plotter, davit, Raymarine Auto Pilot, Roller furl, 2 new head sails with UV protective cover, Ice box, new bottom job, all hatches painted, engine in good working condition. She was raced a great deal and has a great sail inventory with a selection of racing sails and cruising sails some being brand new and a spinnaker. The interior is a full liner attached to the hull making it virtually waterproof saving you from the pesky leaks many other designs have. I have a Survey from 10/2018, all major items on survey have been attended to. See full inventory below. The boat is turnkey and sailed most every weekend on the bay with some costal cruising. This would make a great cruising boat which was my initial intention. It is a great performer and seaworthy. Moving out of state forces sale. I will miss this boat immensely it has been a fun boat to sail.
Equipment: Specs: Builder: Dufour Designer: Michel Dufour Keel: Fin Skeg Rudder Hull Shape: Monohull
Dimensions: LOA: 34 Beam: 10 9 Draft: 5 10 Displacement: 10,300 LBS Hull Construction: Fiberglass
Engine: Brand: Volvo Penta (Rebuilt Injectors) Year: 1975 Type: Inboard Fuel: Diesel Prop: 2 blade Prop Engine Power: 25HP Hours: Unknown Good Condition
Tanks: Freshwater: 2 Bladder 70 gal. Fuel Tank: Stainless 21 gal. Holding Tank: Bladder 15 gal.
Accommodations: Number of Single Berths: 2 Number of Double Berths: 2 V berth and dinette Number of Heads: 1 Table: 1 Storage: many, foul weather gear locker (NEW) Cushion covers. (red)
Electronics / Electrical VHF JRC RADAR 1800 CHART PLOTTER Compass Aquameter Log Speedometer (non functional) Signet Depth Sounder (water logged display) Signet Wind Speed and Direction (erratic) Raymarine Autopilot Batteries: 2 Deep cell 2018 Smart Charger 2 Sears 12V fixture lighting, and main breaker system
Pluming: Whale foot pump: Galley: 1 fresh H20 1 sea water Head: 1 fresh H20 Water Filter: inline (not used) Electrical Water Pump: Galley sink and Head Shower and Sink Bildge pump: 2 total #1-Electric: (NEW) (not installed) and #2 High Volume Manual Pump Head (NEW) Macerator head overboard pump
Galley: Ice Box and Sink Three Burner Eno LPG stove with Oven Propane tank with shut off valve at stove
Sail Inventory: Main Sail: 2 #1 Good 2 reefs #2: older Head Sail: 2 (NEW) with sumbrella protecting, 2 racing (good & excellent), 1 older good, 1 great-excellent condition only loose sumbrella stiching. Spinnaker: good (spinnaker pole) Jib Furling: Harken Lazy Jacks
Deck Equipment: Stainless 6 step removable ladder 25# CQR anchor Chain to 3 Strand Nylon rode 300ft aprox. Radar Mast Small Davit (engine lift) Boom Brake
Miscellaneous: PFDs Safety equipment Fire Extinguishers Boat hook Various lines Fenders
Specs
- Designer
- Michel Dufour
- Builder
- Dufour Yachts
- Associations
- ?
- # Built
- ?
- Hull
- Monohull
- Keel
- Fin
- Rudder
- Skeg
- Construction
- FG
Dimensions
- Length Overall
- 33′ 7″ / 10.2 m
- Waterline Length
- 111′ 6″ / 34 m
- Beam
- 32′ 9″ / 10 m
- Draft
- 16′ 4″ / 5 m
- Displacement
- 11,400 lb / 5,171 kg
- Ballast
- 4,000 lb / 1,814 kg
Rig and Sails
- Type
- Sloop
- Reported Sail Area
- 516′² / 47.9 m²
- Total Sail Area
- 516′² / 48 m²
Mainsail
- Sail Area
- 220′² / 20.4 m²
- P
- 38′ 2″ / 11.6 m
- E
- 11′ 6″ / 3.5 m
- Air Draft
- ?
Foresail
- Sail Area
- 296′² / 27.5 m²
- I
- 43′ 7″ / 13.3 m
- J
- 13′ 7″ / 4.2 m
- Forestay Length
- 45′ 8″ / 13.9 m
Auxilary Power
- Make
- Volvo Penta
- Model
- MD 28
- HP
- 25
- Fuel Type
- Diesel
- Fuel Capacity
- ?
- Engine Hours
- ?
Accomodations
- Water Capacity
- ?
- Holding Tank Capacity
- ?
- Headroom
- ?
- Cabins
- 2
Calculations
- Hull Speed
-
7.0 kn
Classic: 6.76 kn
Hull Speed
The theoretical maximum speed that a displacement hull can move efficiently through the water is determined by it's waterline length and displacement. It may be unable to reach this speed if the boat is underpowered or heavily loaded, though it may exceed this speed given enough power. Read more.
Formula
Classic hull speed formula:
Hull Speed = 1.34 x √LWL
A more accurate formula devised by Dave Gerr in The Propeller Handbook replaces the Speed/Length ratio constant of 1.34 with a calculation based on the Displacement/Length ratio.
Max Speed/Length ratio = 8.26 ÷ Displacement/Length ratio.311
Hull Speed = Max Speed/Length ratio x √LWL
- Sail Area/Displacement
-
16.3
Sail Area / Displacement Ratio
A measure of the power of the sails relative to the weight of the boat. The higher the number, the higher the performance, but the harder the boat will be to handle. This ratio is a "non-dimensional" value that facilitates comparisons between boats of different types and sizes. Read more.
Formula
SA/D = SA ÷ (D ÷ 64)2/3
- SA: Sail area in square feet, derived by adding the mainsail area to 100% of the foretriangle area (the lateral area above the deck between the mast and the forestay).
- D: Displacement in pounds.
- Ballast/Displacement
-
35.1
<40: less stiff, less powerful
Ballast / Displacement Ratio
A measure of the stability of a boat's hull that suggests how well a monohull will stand up to its sails. The ballast displacement ratio indicates how much of the weight of a boat is placed for maximum stability against capsizing and is an indicator of stiffness and resistance to capsize.
Formula
Ballast / Displacement * 100
- Displacement/Length
-
309.6
300-400: heavy
Displacement / Length Ratio
A measure of the weight of the boat relative to it's length at the waterline. The higher a boat’s D/L ratio, the more easily it will carry a load and the more comfortable its motion will be. The lower a boat's ratio is, the less power it takes to drive the boat to its nominal hull speed or beyond. Read more.
Formula
D/L = (D ÷ 2240) ÷ (0.01 x LWL)³
- D: Displacement of the boat in pounds.
- LWL: Waterline length in feet
- Comfort Ratio
-
26.5
20-30: coastal cruiser
Comfort Ratio
This ratio assess how quickly and abruptly a boat’s hull reacts to waves in a significant seaway, these being the elements of a boat’s motion most likely to cause seasickness. Read more.
Formula
Comfort ratio = D ÷ (.65 x (.7 LWL + .3 LOA) x Beam1.33)
- D: Displacement of the boat in pounds
- LWL: Waterline length in feet
- LOA: Length overall in feet
- Beam: Width of boat at the widest point in feet
- Capsize Screening
-
1.9
<2.0: better suited for ocean passages
Capsize Screening Formula
This formula attempts to indicate whether a given boat might be too wide and light to readily right itself after being overturned in extreme conditions. Read more.
Formula
CSV = Beam ÷ ³√(D / 64)
- Beam: Width of boat at the widest point in feet
- D: Displacement of the boat in pounds
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