coastal-cruiser

Dufour 31

Dufour Yachts · 1973 · Sloop rig

Dufour 31 profile drawing
LOA30.83'
Beam10.5'
Draft5.67'
Displ.4.8t
Rigsloop
HullFiberglass

Bluewater Evidence · Ocean Proven

76% confidence

John Neal's Boats to Consider for Ocean Cruising lists the Dufour 31, rated 2 of 5, noting that Dufour's 1964-84 models had solid hulls and balsa-cored decks. Yachting Monthly calls it a highly successful cruiser-racer whose masthead rig gives fast cruising performance. Its capsize screen value is 1.98.

Overview

The Dufour 31 is a Michel Dufour design launched in 1973, and one of the yard’s most successful boats, with over 900 sold. Its clipper bow makes it easy to pick out.

Design and Construction

Neal notes that Dufours of this period have solid hulls and balsa-cored decks. sailboatdata.com lists a fin keel with a skeg-hung rudder, 30.83 ft overall on a 23 ft waterline, 10.5 ft of beam and 5.67 ft of draft, with 3,696 lb of ballast in a 9,600 lb displacement. The masthead sloop carries about 395 sq ft.

Under Sail

Yachting Monthly calls it a cruiser-racer in its day whose powerful masthead rig gives fast cruising performance.

Buyers Notes

John Neal rates it 2 of 5. Check the balsa-cored deck (see Known Issues). Down below there are six berths and about 6 ft 3 in of headroom.

Passage records

Intrigue· Bob Marotta1984

Singlehanded Transpac, San Francisco to Hanalei Bay (1984)

Finished 1 time in the official results.

Source: Singlehanded Sailing Society: Singlehanded Transpac results, 1978 to 2021

Known Issues

Deck coremoderatePassageBoats editorial

Neal notes that Dufours of this period have balsa-cored decks.

Inspection: Sound the deck and check around fittings for wet balsa core.

Source: John Neal - Boats to Consider for Ocean Cruising

Documented repairs and system-specific fixes reported for the Dufour 31, drawn from known-issue write-ups and video transcripts.

Repairs Documented on Video

⚙ mast⚙ roller furling

The owner found the mast in worse shape than expected: the roller furling extrusion was bent and crooked, so he removed every one and a half meter piece and replaced one in the middle. Rigging had to come out too, and he found it damaged.

Sailing Silverwind

Episode 4 | Dufour 31 project | Rebuilding the mast without much knowledge! |

▶ watch at 1:24
⚙ standing rigging

He wanted to renew three or four of the eight rigging wires, but the Dutch rigger he chose does "all eight or none", reasoning that a partly renewed rig leaves a grey area if the mast comes down. He went with all new standing rigging.

Sailing Silverwind

Episode 4 | Dufour 31 project | Rebuilding the mast without much knowledge! |

▶ watch at 12:14
⚙ roller furling

The roller furling had been stored for three years with one profile under the mast and bent. He disassembled the whole furler, compared the old profile to the new one, and reassembled it with new rigging.

Sailing Silverwind

Episode 4 | Dufour 31 project | Rebuilding the mast without much knowledge! |

▶ watch at 18:04
⚙ mast

His summary of the mast project: about 15 hard-working days and about 2,000 euros in total for new gear, new electrics, Duralac paste, cleaning products and similar. He says he underestimated the time.

Sailing Silverwind

Episode 4 | Dufour 31 project | Rebuilding the mast without much knowledge! |

▶ watch at 23:56

What sailing channels say about the Dufour 31, quoted from video transcripts with a link to the exact moment. Opinions belong to the speakers; the written review above stays independent of them.

repairs⚙ mast⚙ roller furling

The owner found the mast in worse shape than expected: the roller furling extrusion was bent and crooked, so he removed every one and a half meter piece and replaced one in the middle. Rigging had to come out too, and he found it damaged.

Sailing Silverwind

Episode 4 | Dufour 31 project | Rebuilding the mast without much knowledge! |

▶ watch at 1:24
warns⚙ standing rigging

The mast still held its original rigging from 1978. The owner's insurer told him that in Dutch inland waters there are no rules, but once you cross onto seawater the rigging "cannot be older than 15 years."

Sailing Silverwind

Episode 4 | Dufour 31 project | Rebuilding the mast without much knowledge! |

▶ watch at 2:08
repairs⚙ standing rigging

He wanted to renew three or four of the eight rigging wires, but the Dutch rigger he chose does "all eight or none", reasoning that a partly renewed rig leaves a grey area if the mast comes down. He went with all new standing rigging.

Sailing Silverwind

Episode 4 | Dufour 31 project | Rebuilding the mast without much knowledge! |

▶ watch at 12:14
repairs⚙ roller furling

The roller furling had been stored for three years with one profile under the mast and bent. He disassembled the whole furler, compared the old profile to the new one, and reassembled it with new rigging.

Sailing Silverwind

Episode 4 | Dufour 31 project | Rebuilding the mast without much knowledge! |

▶ watch at 18:04
repairs⚙ mast

His summary of the mast project: about 15 hard-working days and about 2,000 euros in total for new gear, new electrics, Duralac paste, cleaning products and similar. He says he underestimated the time.

Sailing Silverwind

Episode 4 | Dufour 31 project | Rebuilding the mast without much knowledge! |

▶ watch at 23:56
  1. [1]SpecificationsDUFOUR 31 - SailboatData.com- Dimensions, displacement, ballast, sail area, keel, rig, designer and builder.
  2. [2]ReviewYachting Monthly - Dufour 31- Used-boat summary from the 1981 test: dimensions, numbers sold, rig and character.
  3. [3]EditorialJohn Neal - Boats to Consider for Ocean Cruising (Mahina)- Lists the Dufour 31, rated 2 of 5.
See something wrong? Suggest a correction

Corrections need evidence: a link or citation we can check. Sourced suggestions get reviewed and credited in the entry's change notes if applied.

Owner knowledge counts: name the boat and year so we can attribute it.