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“The Southern Cross 35 is a ruggedly built, double-ended cutter intended for blue water passage-making with safety, comfort, and speed. She was designed by Thomas Gillmer, the professor of naval architecture at the Naval Academy in Annapolis who also penned the first fiberglass boat to circumnavigate the globe, the Allied Seawind 30 Ketch. The Southern Cross 35 is wide-beamed and graced with a sweeping sheerline that keeps her exceptionally dry in a rough seaway. At the same time, a relatively high-aspect rig along with a fin keel and skeg-mounted rudder allow her to combine impressive sea-worthiness with surprisingly lively performance.” from Bluewaterboats.org.
We have been the sole owners of this SC35. The hull was purchased in 1983 and the finished boat was launched in 1988 and has been used for seasonal freshwater sailing ever since. Please feel free to contact by phone or email for additional information.
Equipment: Mechanical: 2004 Yanmar 3JH4E 40hp 3 cylinder diesel, 3 blade propeller
Airex cored fiberglass hull
LOD 35’ LWL 28’ Beam 11’ 5’’ Draft 4’ 11’’ Displacement 17,710 lbs Ballast 5,750 lbs lead
Sail Area 632 sq ft Water 90 gallons Fuel 35 Gallons
Holding Tank 10 gallons plus direct pump out
Edson diaphragm hand bilge pump near helm
Bowmar bronze opening ports
Bowmar and Lewmar hatches
“Metal Mast” mast and booms
Storm trysail track and downwind pole track installed
Barient 27st bronze sheet winches
Barient 22st halyard winches lead to cockpit through forspar roper clutches
Harken main sheet and traveler system
Schaefer blocks
A.B.I anchor windless
Danforth 29 lb Hi-test anchor, 35ft of 5/16in high test chain, 300ft of 5/8in of nylon
C.Q.R. 45lb 200 ft of 3/8in gal. Chain (never used)
Standard rigging 5/16in stainless, sta-lock end fittings, Merriman 1/2 in turnbuckles (like new Condition)
Running rigging mostly original (ok condition)
North sails main and yankee jib (fair condition) , stay sail (good condition, 135% Genoa sail (excellent condition)
Force 10 propane stove and oven
Force 10 Kerosene cabin heater
Marinetics electric panel
Fresh water and sea water foot pumps in galley
Raritan manual head
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.
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
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.
SA/D = SA ÷ (D ÷ 64)2/3
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.
Ballast / Displacement * 100
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.
D/L = (D ÷ 2240) ÷ (0.01 x LWL)³
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.
Comfort ratio = D ÷ (.65 x (.7 LWL + .3 LOA) x Beam1.33)
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.
CSV = Beam ÷ ³√(D / 64)
From BlueWaterBoats.org:
The Southern Cross 39 is a no nonsense double-ender following the theme of her two smaller siblings the Southern Cross 31 and Southern Cross 35. Designed by Thomas Gillmer, a professor of naval architecture at the US Naval Academy, she has the same canoe stern and sharply rising sheer line, but underneath Gillmer gave her a fin keel and skeg hung rudder arrangement to increase the performance of this passage making machine. Her cutter rig with bowsprit has 774 sq. ft. of canvas, plenty for her displacement of 21,000 lbs.
Launched in 1981, the first 13 hulls were factory built and bathed in fine light teak. About half of the subsequent models were sold as kits and owner finished so interior layouts can vary. The most common configuration has a V-berth forward, quarter berth portside, and superb seagoing galley amidships. The galley is easy to access from the companionway with a U-shaped orientation for security offshore. The hulls were built in fiberglass with Airex foam coring throughout while the deck and cabin house were balsa cored. The ballast is internally set cast iron. Water tanks are set in the keel while the fuel tank is underneath the aft berth.
These boats were built until 1990 when the Ryder factory closed.
This listing is presented by SailboatListings.com. Visit their website for more information or to contact the seller.
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