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1992 Pro Kennex Multicoques Kennex 420

Listed
Expired
$260,000 USD

Seller's Description

43 Sailing catamaran for sale by owner. Pro Kennex 420 / 445 It was launch from the boatyard as a Pro Kennex 420 model. But it is basically a Pro Kennex 445 with shorter transoms. Same molds used, same hulls, interior, layout, width, installations, sail plan, everything. Please do not compare with wooden catamarans (plywood core or balsa core, like Lagoon, Fountain Pajot, etc) Price is USD 260.000.- / 223.000.-

6 cabins. 4 double berth with private head and shower 2 single berth cabins with door access from fore doble berth cabins and hatch access from deck. Located currently in Mexico (Isla Mujeres) on a private mooring (included in price, if sold while the boat is in Isla Mujeres). Most likely sailing plan is (in order to arrange for visiting): Panama (San Blas) from December 2021 to March 2022. USA (Florida) on April 2022. Altantic crossing to Portugal in May 2022. Ibiza from June to September 2022. Portugal (Algarve) from October to November 2022. Atlantic crossing, from Portugal to Caribbean, December 2022. Ready to sail anywhere in the world right now. The biggest catamaran cockpit of his range. The widest (24.7’ / 7.5 mts) catamaran of his range (this width if usually found in 50 foot or larger catamarans). Catamaran safety and stability is given by its width!!! There is no wood, plywood, balsa anywhere in the superstructure (deck, walls, bulkheads, reinforcements) of this boat. Wood and plywood was used in the interior furniture only. It is all built in polyester resin over Airex (closed cells PVC foam), using vacuum bag and infusion technics. Hulls below waterline are solid fiberglass. Very light, reliable and durable. All the bulkheads (8 per hull) are built in fiberglass over Airex sheets and glassed to the hull. Not sika-glued like most mass production catamarans. Designed by the world renowned Van Peteghem and Lauriot Prevost (VPLP). Was built in France in 1992. Complete refit in 2020

Equipment: Ask details by email

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Specs

Designers
?
Builders
?
Associations
?
# Built
?
Hull
Monohull
Keel
?
Rudder
?
Construction
?

Dimensions

Length Overall
43 0 / 13.1 m
Waterline Length
?
Beam
25 0 / 7.6 m
Draft
4 0 / 1.2 m
Displacement
?
Ballast
?

Rig and Sails

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

Auxilary Power

Make
?
Model
?
HP
?
Fuel Type
?
Fuel Capacity
?
Engine Hours
?

Accomodations

Water Capacity
?
Holding Tank Capacity
?
Headroom
?
Cabins
6

Calculations

Hull Speed
?

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

?
Classic formula: ?
Sail Area/Displacement
?

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

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

?
<40: less stiff, less powerful
>40: stiffer, more powerful
Displacement/Length
?

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
?
<100: ultralight
100-200: light
200-300: moderate
300-400: heavy
>400: very heavy
Comfort Ratio
?

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
?
<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
?

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
?
<2: better suited for ocean passages
>2: better suited for coastal cruising

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