1975 — 1983
Designer
Raymond Wall
Builder
CS Yachts (Canadian Sailcraft)
Associations
?
# Built
480
Hull
Monohull
Keel
Fin
Rudder
Transom hung
Construction
FG

Dimensions

Length Overall
27 0 / 8.2 m
Waterline Length
23 11 / 7.3 m
Beam
9 3 / 2.8 m
Draft
5 2 / 1.6 m
Displacement
6,100 lb / 2,767 kg
Ballast
2,400 lb / 1,089 kg (Iron /Lead)
Drawing of CS 27
  • 1 / 18
  • 2 / 18
  • 3 / 18
    Dominican Republic
    1979 CS 27
    $12,500 USD
  • 4 / 18
    Dominican Republic
    1979 CS 27
    $12,500 USD
  • 5 / 18
    Dominican Republic
    1979 CS 27
    $12,500 USD
  • 6 / 18
    Dominican Republic
    1979 CS 27
    $12,500 USD
  • 7 / 18
    Dominican Republic
    1979 CS 27
    $12,500 USD
  • 8 / 18
    Dominican Republic
    1979 CS 27
    $12,500 USD
  • 9 / 18
    Dominican Republic
    1979 CS 27
    $12,500 USD
  • 10 / 18
    Dominican Republic
    1979 CS 27
    $12,500 USD
  • 11 / 18
    Dominican Republic
    1979 CS 27
    $12,500 USD
  • 12 / 18
    Dominican Republic
    1979 CS 27
    $12,500 USD
  • 13 / 18
    Dominican Republic
    1979 CS 27
    $12,500 USD
  • 14 / 18
    Dominican Republic
    1979 CS 27
    $12,500 USD
  • 15 / 18
    Dominican Republic
    1979 CS 27
    $12,500 USD
  • 16 / 18
    Dominican Republic
    1979 CS 27
    $12,500 USD
  • 17 / 18
    Dominican Republic
    1979 CS 27
    $12,500 USD
  • 18 / 18
    Dominican Republic
    1979 CS 27
    $12,500 USD

Rig and Sails

Type
Sloop
Reported Sail Area
341′² / 31.7 m²
Total Sail Area
341′² / 31.7 m²
Mainsail
Sail Area
146′² / 13.5 m²
P
29 11 / 9.1 m
E
9 8 / 3 m
Air Draft
37 9 / 11.5 m
Foresail
Sail Area
195′² / 18.2 m²
I
36 2 / 11 m
J
10 9 / 3.3 m
Forestay Length
37 9 / 11.5 m

Auxilary Power

Make
Yanmar
Model
YSE
HP
?
Fuel Type
Diesel
Fuel Capacity
?

Accomodations

Water Capacity
?
Holding Tank Capacity
?
Headroom
?
Cabins
?

Calculations

Hull Speed
7.8 kn
Classic: 6.55 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

7.79 knots
Classic formula: 6.55 knots
Sail Area/Displacement
16.3
16-20: good 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.
16.34
<16: under powered
16-20: good performance
>20: high performance
Ballast/Displacement
39.4
<40: less stiff, less 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

39.36
<40: less stiff, less powerful
>40: stiffer, more powerful
Displacement/Length
199.1
100-200: light

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
199.05
<100: ultralight
100-200: light
200-300: moderate
300-400: heavy
>400: very heavy
Comfort Ratio
19.3
<20: lightweight racing 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
19.28
<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
2.0
>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
2.04
<2: better suited for ocean passages
>2: better suited for coastal cruising

Notes

The optional shoal draft model has a longer bolt-on lead keel.
Draft: 3.92’/1.19m
Displacement: 6500 lbs./2948 kgs.
Ballast: 2800 lbs./1270 kgs.
Sail Area/Disp.: 15.71
Bal./Disp.: 43.08%;Disp./Len.: 212.02
About 90 boats were fitted with these lead fins.
In 1977, the rudder area was increased. CS also offered owners a rudder retrofit kit that added two inches to the forward edge to improve helm balance. Three years later, the mast was changed from a Proctor to an Isomat section, the fibreglass cabin sole was replaced with teak and holly , and cupboard doors were finished with woven cane fronts. The Yanmar YSE was replaced with the 1GM as standard equipment. Drawing shown here is from introductory brochure.

For Sale

Have a sailboat to sell?
List it for free and it will show up here.
Advertisement

Great choice! Your favorites are temporarily saved for this session. Sign in to save them permanently, access them on any device, and receive relevant alerts.

We will occasionally send you relevant updates. You can opt out or contact us any time.

Subscribe

Get occassional updates about new features or featured sailboats.
You can opt out or contact us any time.
Measurements:

Made with ♥ by the founders of Refit Guide
©2021 Sea Time Tech, LLC

This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.