dufour safari 27 sailboat

Dufour safari 27

The dufour safari 27 is a 27.0ft masthead sloop designed by michel dufour and built in fiberglass by dufour yachts (fra) since 1969..

The Dufour safari 27 is a moderate weight sailboat which is slightly under powered. It is stable / stiff and has a low righting capability if capsized. It is best suited as a coastal cruiser.

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Review of Dufour Safari 27

Basic specs..

The hull is made of fibreglass. Generally, a hull made of fibreglass requires only a minimum of maintenance during the sailing season. And outside the sailing season, just bottom cleaning and perhaps anti-fouling painting once a year - a few hours of work, that's all.

The boat equipped with a masthead rig. The advantage of a masthead rig is its simplicity and the fact that a given sail area - compared with a fractional rig - can be carried lower and thus with less heeling moment.

The Dufour Safari 27 is equipped with a fin keel. A boat with a fin keel is more manoeuvrable but has less directional stability than a similar boat with a full keel.

The boat can enter even shallow marinas as the draft is just about 1.32 - 1.42 meter (4.33 - 4.63 ft) dependent on the load. See immersion rate below.

Sailing characteristics

This section covers widely used rules of thumb to describe the sailing characteristics. Please note that even though the calculations are correct, the interpretation of the results might not be valid for extreme boats.

What is Capsize Screening Formula (CSF)?

The capsize screening value for Dufour Safari 27 is 2.02, indicating that this boat would not be accepted to participate in ocean races.

What is Theoretical Maximum Hull Speed?

The theoretical maximal speed of a displacement boat of this length is 6.2 knots. The term "Theoretical Maximum Hull Speed" is widely used even though a boat can sail faster. The term shall be interpreted as above the theoretical speed a great additional power is necessary for a small gain in speed.

The immersion rate is defined as the weight required to sink the boat a certain level. The immersion rate for Dufour Safari 27 is about 122 kg/cm, alternatively 685 lbs/inch. Meaning: if you load 122 kg cargo on the boat then it will sink 1 cm. Alternatively, if you load 685 lbs cargo on the boat it will sink 1 inch.

Sailing statistics

This section is statistical comparison with similar boats of the same category. The basis of the following statistical computations is our unique database with more than 26,000 different boat types and 350,000 data points.

What is Motion Comfort Ratio (MCR)?

What is L/B (Length Beam Ratio)?

What is a Ballast Ratio?

What is Displacement Length Ratio?

What is SA/D (Sail Area Displacement ratio)?

Maintenance

When buying anti-fouling bottom paint, it's nice to know how much to buy. The surface of the wet bottom is about 20m 2 (215 ft 2 ). Based on this, your favourite maritime shop can tell you the quantity you need.

Are your sails worn out? You might find your next sail here: Sails for Sale

If you need to renew parts of your running rig and is not quite sure of the dimensions, you may find the estimates computed below useful.

This section is reserved boat owner's modifications, improvements, etc. Here you might find (or contribute with) inspiration for your boat.

Do you have changes/improvements you would like to share? Upload a photo and describe what you have done.

We are always looking for new photos. If you can contribute with photos for Dufour Safari 27 it would be a great help.

If you have any comments to the review, improvement suggestions, or the like, feel free to contact us . Criticism helps us to improve.

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• Yachting Monthly's Scuttlebutt

Dufour Safari 27 (1973)

• Thread starter dufour27
• Start date 31 Aug 2010
• 31 Aug 2010
• 15 Aug 2011

SailingNewYorkCity

Hello and welcome to the forum. Sorry for the late reply but I too am new to this forum. I have a 1973 Dufour Safari and have had it for some three years. I love it. It is a solid boat and sails well including into the wind. I am six feet tall and find it big enough. Sure, I would like a little more room but it works just fine for me. I have even lived on board for months at a time. The boat is great for single handing while still providing enough comfort to do some cruising. I can easily fit four into the cockpit and have on occasion had more. The cockpit is very comfortable and pretty dry even in a good blow. I have a soft spot on the deck but this isn't a big issue. I will either have it cored or filled with epoxy. I am researching the options now. I have a Volvo MD6A engine that is still chugging along. I am finishing up some changes to my fuel system. I have replaced much of the line with new Racor hose and fittings. I added a Racor fuel filter and a three way valve. I can now turn off the fuel to the filter or drain the tank without disconnecting anything. The sail locker is big and I am making some improvements in it. I am adding a step inside the locker to make it easier to get into and out of it. I am also adding a row or wooden hooks to hang things on. Additionally, I have many mounts for items including hand pumps, tools, etc. Finally, I have added dry deck to let moisture drip away from anything in the locker. My Safari seems to be one of the few with a wheel and based upon my research it must have been an aftermarket addition. I am not happy with the state of my wiring and wish to tidy it up and fix a few poorly done old repairs. If you wish to see the boat you can go to www.SailingNetworks.com and look for the Honey Bee. Eventually I want to repaint it. I am also researching CopperCoat, HullSpeed, and other bottom paints. I wish you the best of luck with your boat. I am sure you will enjoy it.  

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Safari 27 - Dufour Yachts / STW001416

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ruggerini 15cv

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• Sailboat Guide

Dufour 27 is a 27 ′ 1 ″ / 8.3 m monohull sailboat designed by Michel Dufour and built by Dufour Yachts between 1972 and 1979.

• 1 / 2 The Bronx, NY, US 1975 Dufour 27 $9,000 USD View
• 2 / 2 The Bronx, NY, US 1975 Dufour 27 $9,000 USD View

Rig and Sails

Auxilary power, accomodations, calculations.

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.

Classic hull speed formula:

Hull Speed = 1.34 x √LWL

Max Speed/Length ratio = 8.26 ÷ Displacement/Length ratio .311 Hull Speed = Max Speed/Length ratio x √LWL

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.

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 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.

Ballast / Displacement * 100

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.

D/L = (D ÷ 2240) ÷ (0.01 x LWL)³

• D: Displacement of the boat in pounds.
• LWL: Waterline length in feet

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.

Comfort ratio = D ÷ (.65 x (.7 LWL + .3 LOA) x Beam 1.33 )

• D: Displacement of the boat in pounds
• LOA: Length overall in feet
• Beam: Width of boat at the widest point in feet

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.

CSV = Beam ÷ ³√(D / 64)

Dimensions from builders brochure and original sail plan. Aux. power: Renault Couach or Volvo MD-6A Opt. deep keel: 5.83’/1.78m

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