x yacht 402

The X-402 is no longer in production. To see an overview of the current range please visit the Yachts page. You can also visit the overview of Previous X-Yachts Models .

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X-yachts X-402 (1986) For sale

X-yachts x-402 (1986) - 39,000 eur.

39,000 € VAT Paid

Technical data

Accessories, navigation equipment, staging and technical, domestic facilities onboard, security equipment, entertainment, sails accessories, kitchen and appliances, do you want to know more about this boat     , habitability, composition, contact x-yachts france, data sent successfully, other boats that may interest you....

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X-yachts X-402 (1986)

Dear Sirs, I have seen on YachtVillage your offer about X-Yachts X-402 - 1986 (code: 554075). I am interested in the offer and would like you to contact me. Thank you.

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X 402 Year 1984

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• Sailboat Guide

X-402 is a 39 ′ 7 ″ / 12.1 m monohull sailboat designed by Niels Jeppesen and built by X-Yachts between 1984 and 1990.

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)

Based on the X 1 TON. (1986 Int. One Ton Cup winner). Available with masthead or fractional rig.

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