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Dingo by SailMFG (USA) Catamaran

Listed
Expired
$500 USD

Seller's Description

I bought this boat in the ‘70’s and sailed it extensively for many years, mainly in the 1000 Islands area of the St. Lawrence river. For the past 21 years, it’s been stored in the attic of my garage in the Windsor, Ontario area. As a project boat, it’s in great shape. To make it right, it will need a decent amount of cleaning and buffing as well as replacing caps in the deck that cover the beam post pins and replacement of the bow caps. The mast and boom are the gold anodized colour and there are many years of scratching on the mast. It has an enlarged mainsail with battens and has never been sailed with a headsail, although it does have a single forestay that would ease installation of such. Through deck ports were added to allow packing overnight gear inside the hulls for trips to various island parks of the St. Lawrence and it’s likely they may need replacing simply due to aging. None of the photos in this ad are of this boat, but it has a yellow deck with white hulls. I’ve read a few posts broadly deriding non-specifics of the Dingo, but in my experience, it’s a responsive, enjoyable and decently performing cat of 15’ or so. The raked mast and centerboard allow it to point well, it runs decently before the wind and is very stable when flying a hull. Overall, in my opinion, it’s a responsive and fun craft that deserves a better home. Shipping, if any, will be the responsibility of the purchaser.

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Specs

Designers
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Builders
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Associations
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# Built
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Hull
Catamaran
Keel
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Rudder
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Construction
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Dimensions

Length Overall
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Waterline Length
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Beam
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Draft
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Displacement
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Ballast
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Rig and Sails

Type
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Reported Sail Area
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Total Sail Area
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Mainsail
Sail Area
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P
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E
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Air Draft
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Foresail
Sail Area
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I
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J
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Forestay Length
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Auxilary Power

Make
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Model
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HP
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Fuel Type
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Fuel Capacity
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Engine Hours
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Accomodations

Water Capacity
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Holding Tank Capacity
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Headroom
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Cabins
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Calculations

Hull Speed
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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

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Classic formula: ?
Sail Area/Displacement
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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.
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<16: under powered
16-20: good performance
>20: high performance
Ballast/Displacement
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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

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<40: less stiff, less powerful
>40: stiffer, more powerful
Displacement/Length
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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
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<100: ultralight
100-200: light
200-300: moderate
300-400: heavy
>400: very heavy
Comfort Ratio
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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
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<20: lightweight racing boat
20-30: coastal cruiser
30-40: moderate bluewater cruising boat
40-50: heavy bluewater boat
>50: extremely heavy bluewater boat
Capsize Screening
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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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<2: better suited for ocean passages
>2: better suited for coastal cruising

This listing is presented by TheBeachCats.com. Visit their website for more information or to contact the seller.

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