A9m

The Achilles 9 metre.

The first part of this page is an abstract of a longer piece about the A9m and "Sancerre" to be found here: SV Sancerre, About the A9m. The blog also has descriptions of the Sancerre's cruises, 8,500 solo miles (to Winter 2021) including two round GB trips and a Jester Challenge.

Click here for the sail number register.



Achilles 9 metre plan view

Achilles 9 metre side view

Principal Dimensions.

 

Feet

Metres

Length Over All (LOA)

 29' 10"

 9.11

Waterline Length (LWL)

 25' 5"

 7.75

Beam

 9'

 2.75

Draft

 5' 6"

 1.67

 

Lb

Kg

Designed Displacement

 7,000

3,175

Keel ballast

 3,000

1,362


The theoretical hull speed is 6.81 knots and for the traditionalist, she measures at 9 Tons Thames Measurement.

The Capsize Screening Number is 1.82 (CCoA "Capsize project formula", Olin Stephens et al., following the Fastnet Disaster in 1979) a number less than 2 is considered appropriate for serious offshore sailing although modern designs are often well above this number and manage OK. 

Rig.


 

Principle Rig Measurements

Feet

Metres

I

Jib halyard sheave to toe rail

35.03

10.68

J

Mast to forestay pin.

11.34

3.46

P

Max mainsail Luff

30.93

9.43

E

Max mainsail foot

9.24

2.82

FSL

Forestay Length

36.9

11.3


Sails

Achilles 9 metre Sail plan

Data from a 1977 brochure or calculated from it (e & oe!)

 

Square feet

Square Metres

Sancerre Sq m

Mainsail

143

13.3

13.3

No 1 Genoa (150%)

313

29.1

c 29

No 2 Genoa (replaced by #1)

247

22.9

c 20

No 1 Jib

174

16.2

 n/a

No 2 Jib

62

5.8

 n/a

Spinnaker (Theoretical max calculated by Kemp Sails)

732

68

60

Spinnaker (Original "floater" option)

624

58

Cruising Shute

n/a 

 n/a

c 45

Heavy weather jib (max under World Sailings Offshore Special Regulations)

165

15.4

12.1

Storm jib  (max under World Sailings Offshore Special Regulations)

61.4

5.7

5.7

Tri-sail (max under the special regs

50

4.65

n/a


Achilles 9 metre Freebird
A9m, "Freebird", A011 in Baltimore harbour
2019. Photo: John Lashbrook. 
 
Achilles 9 metre Tranquillity
"Tranquillity",  A059, a triple keel variant. Photo Mike Atkins.

Original Brochures and Sales info.

Images can be enlarged by clicking on them, on a large screen or by zooming they should be readable, if not they can be downloaded (right click) and viewed or printed using other tools.

1977 Sales Brochure







1978 Kit Information




1977 Price List







No comments:

Post a Comment