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Expired

1973 Impala 35 S&S

Lipari, Sicily, Italy
€25 EUR
Condition: Good

Hull in good conditions , no osmosis . Cutter rigged with mobile staysail; main sail and genoa 2018 .Genoa roller Profurl ; Electric Windlass Quick 1500 W. New rigging 2019 . Anchor chain 50 mt 2020 , Fortress anchor plus Danforth . Stove with two burners , Frigoboat ,1 manual head Jabsco , shower and external shower.GPS Furuno , little Plotter Lowrance , WHF, Solar panel .Autopilot Tiller 1000 Raymarine . Wind and depht Raimarine .Sturdy and trustworthy boat . Photos on request on my mail .

Listed
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Specs

Designer
Sparkman & Stephens
Builder
Niccolò Puccinelli (ITA)
Associations
?
# Built
?
Hull
Monohull
Keel
Bulb
Rudder
Partial Skeg
Construction
FG

Dimensions

Length Overall
34′ 5″ / 10.5 m
Waterline Length
25′ 7″ / 7.8 m
Beam
10′ 2″ / 3.1 m
Draft
5′ 10″ / 1.8 m
Displacement
13,980 lb / 6,340 kg
Ballast
5,710 lb / 2,590 kg

Rig and Sails

Type
Fractional Sloop
Reported Sail Area
516′² / 47.9 m²
Total Sail Area
517′² / 48 m²
Mainsail
Sail Area
214′² / 19.9 m²
P
39′ 0″ / 11.9 m
E
11′ 1″ / 3.4 m
Air Draft
42′ 7″ / 13 m
Foresail
Sail Area
301′² / 28 m²
I
43′ 11″ / 13.4 m
J
13′ 9″ / 4.2 m
Forestay Length
46′ 3″ / 14.1 m

Auxilary Power

Make
Betamarine
Model
Beta
HP
35
Fuel Type
Diesel
Fuel Capacity
21 gal / 80 l
Engine Hours
1000

Accomodations

Water Capacity
66 gal / 250 l
Holding Tank Capacity
?
Headroom
5′ 10″ / 1.8 m
Cabins
2

Calculations

Hull Speed
6.6 kn
Classic: 6.78 kn

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

6.63 knots
Classic formula: 6.78 knots
Sail Area/Displacement
14.2
<16: under powered

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.
14.23
<16: under powered
16-20: good performance
>20: high performance
Ballast/Displacement
40.9
>40: stiffer, more powerful

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

40.85
<40: less stiff, less powerful
>40: stiffer, more powerful
Displacement/Length
372.3
>350: ultraheavy

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
372.34
<100: ultralight
100-200: light
200-300: moderate
300-400: heavy
>400: very heavy
Comfort Ratio
34.9
30-40: moderate bluewater cruising boat

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
34.93
<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
1.7
<2.0: better suited for ocean passages

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
1.68
<2: better suited for ocean passages
>2: better suited for coastal cruising

Notes

Similar to the S&S 34 and the SAGITTA 35.
(S&S #2008)

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