Sparkman and Stephens 34 - Specifications
The S&S34 has been built with slightly different specifications over the last 40 years:
1. Original U.K. built boats had a step down coach roof and lower deck line joining the hull to form a bulwark.
2. Swarbrick Brothers initially built what is now called the Mk 1, with a straight coach roof and single spreader or cruising rig.
3. Swarbrick Brothers later built the Mk 2 with the "tall" (slightly taller, twin spreader) rig, "Mk 2" keel and spade rudder.
4. Maybrook Marine built both cruising and racing (tall rig) versions.
5. Cottesloe Yachts and Swarbrick & Swarbrick Yachts are now building with vacuum-infusion and slightly modified "tall rig".
For more detail on some specifications, please click here
|
Specification (as per S&S plans) |
Metric |
Imperial |
|
Length Overall |
10.23m |
33' 6+5/8" |
|
Waterline Length |
7.37m |
24' 2" |
|
Beam |
3.08m |
10' 1" |
|
Draft |
1.78m |
5'10+1/8" |
|
Displacement |
4171kg |
9195.5lbs |
|
Ballast, Mk1 keel -the lighter weight is from the original lines plan, "weight to be confirmed", the heavier weight was listed on the S&S construction plan, perhaps this was the actual weight after the keel was weighed |
2368kg or 2450kg |
5,220lbs or 5,400lbs |
|
Ballast, Mk2 keel (has lower CoG & different profile) |
2305kg |
5,081lbs |
|
Specification (actual as built by Swarbricks) |
||
|
Length Overall - actual length is shorter than S&S plans as bow was truncated to fit forestay tang |
10.08m |
33'1" |
|
Waterline Length (approx, varies depending on weight of boat) |
7.45-7.7m |
24'5"- 25'3" |
|
Beam |
3.08m |
10' 1" |
|
Draft (approx, Mk 1 keel) + several cms for heavier boats |
1.85m |
6' 1" |
|
Draft (approx, Mk 2 keel) + several cms for heavier boats |
1.92m |
6' 3+1/2" |
|
Displacement -depending on fitout. Current boats several 100kg lighter, varies on fitout |
5000-6000kg |
11,000-13,000lbs |
|
Ballast Mk1 keel |
2480kg |
5,450lbs |
|
Ballast, current Mk 2 keel (original Mk 2 keel uncertain as mould lost but likely similar or a few kg less due to galleries for keel bolts, which are cast into the current keel) |
2365kg |
5,214lbs |
|
Original S&S Rig Specification |
measurements specified in imperial units |
|
|
Forestay above deck at sheerline ("I") |
12.19m |
40' |
|
Mainsail luff length ("P") |
10.67m |
35' |
|
Mainsail foot length ("E") |
3.35m |
11' |
|
Base of foretriangle ("J" - also usually spin pole length). |
3.96m |
13' |
|
Mainsail |
18.0sm |
193.42sq.ft |
|
100% foretriangle |
24.5sm |
263.41sq.ft |
|
No. 1 Genoa (150%LP) |
36.7sm |
395sq.ft |
|
No. 2 Genoa |
29.8sm |
320sq.ft |
|
No. 3 Genoa |
24.2sm |
260sq.ft |
|
Tri-radial Spinnaker |
77.7sm |
836sq.ft |
|
Original S&S Association MK 1 (short) Rig* |
measurements specified in imperial units |
|
|
Forestay above deck at sheerline ("I") |
12.50m |
41' |
|
Mainsail luff length ("P") |
10.97m |
36' |
|
Mainsail foot length ("E") |
3.66m |
12' |
|
Base of foretriangle ("J"). The same for all Australian boats. Also spin pole length. Genoa "LP" = 150% maximum |
4.10m |
13'5" |
|
Note: for 1979/80 year only, up to I = 42' and E= 12'6" was allowed |
|
Original Mk2 (Tall) Rig* |
measurements originally in imperial, later converted to metric |
|
|
Forestay above deck at sheerline ("I") |
13.11m |
43' |
|
Mainsail luff length ("P") |
11.58m (later said to be 11.50m) |
38' |
|
Mainsail foot length ("E") |
3.81m (later 3.80m) |
12'6" |
|
Mainsail |
25.11sm |
270.3sq.ft |
|
100% foretriangle |
26.8sm |
288.5sq.ft |
|
No. 1 Genoa (150%LP) |
41.1sm | 442.4sq.ft |
|
No. 2 Genoa |
37.0sm | 398.3sq.ft |
|
No. 3 Genoa |
27.4sm | 294.9sq.ft |
|
Tri-radial Spinnaker |
95.8sm | 1031.2sq.ft |
|
Current Tall Rig |
measurements specified in metric |
|
|
Forestay above deck at sheerline ("I") |
13.11m |
43' |
|
Mainsail luff length ("P") |
11.30m |
38' |
|
Mainsail foot length ("E") |
3.80m |
12'6" |
|
Mainsail |
24.7sm |
265.9sq.ft |
|
100% foretriangle |
26.8sm |
288.5sq.ft |
|
No. 1 Genoa (150%LP) |
41.1sm | 442.4sq.ft |
|
No. 2 Genoa |
37.0sm | 398.3sq.ft |
|
No. 3 Genoa |
27.4sm | 294.9sq.ft |
|
Tri-radial Spinnaker |
95.8sm | 1031.2sq.ft |
*The rules specified these as
maximum measurements only, some boats measured less, esp when the dimensions
were increased to the Mk 2 size.