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Seller's Description

2013 Nacra 17 #136 ( non-Foiling ) C- or Curved Daggerboards.Boat is in good shape and barely used as a training platformLots of custom extras on this boat. This is not the current Olympic foiling version but most of the parts are compatible and or interchangeable. Carbon mast & sails are worth the asking price alone or can be use on current foiling model. Used as a trainer this model is faster upwind as the foiling version doesn’t foil upwind so its a great training boat for upwind speed testing. Extras: L & S Zhik Harness ( 2 ) mast coverHull / Beach Cover - Non trailer see pics Snorkel cover - Sunbrella canvas Rudder & Daggerboard coversupgraded tramp12 & 10 to 1 mainsheet top block setupsister pins vs cotter pins & rings ( no cotter rings ) double auto ratchet blocks on spin sheet ( inside & outside ) Trailer is NOT included but optional for 2k with custom cradlesNO tiller extension or cat tracks.more pics on Google Drive link https://drive.google.com/drive/folders/0B3e_eMFSPIuWRnl2d3lvTUU4X0k?resourcekey=0-H4KzT_vjlaMl8s2mJMwtVA&usp=sharing

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Specs

Designer
Morrelli & Melvin
Builder
NACRA Catamarans
Associations
?
# Built
?
Hull
Catamaran
Keel
Twin Daggerboard
Rudder
?
Construction
GRP carbon epoxy

Dimensions

Length Overall
17 2 / 5.3 m
Waterline Length
?
Beam
8 5 / 2.6 m
Draft
0 4 / 0.1 m 3 4 / 1 m
Displacement
300 lb / 138 kg
Ballast
?

Rig and Sails

Type
Sloop
Reported Sail Area
216′² / 20.1 m²
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
?

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
76.4
>20: high performance

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.
76.41
<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
5.1
>2.0: better suited for coastal cruising

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
5.05
<2: better suited for ocean passages
>2: better suited for coastal cruising

Notes

Carbon mast and carbon epoxy high aspect curved daggerboards.
Spin. Area 19m2/204 sq.ft.
Used as 2 person catamaran class for 2016 Olympics.
A new, ‘foiler’ version has been under development. The intent is to make it so original boats can be retrofitted. (7/16)

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

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