Summersalt

Summersalt was built by myself in Cairns in 1986/7 and launched on the 17th of November 1987.

She represented the first of my designs but with the hulls built from the 28’ Harrier hull molds.

I modified the mold by extending the sterns by a metre and then the hulls by pushing them wider after they were removed from the mold. Hull construction features foam sandwich sides for stiffness with solid f/glass bottoms for strength. Apart from a lightweight 225gr CSM on the gelcoat, knitted double bias or triaxial fabrics have been used throughout with vinylestre resin.

The underwing is 12mm ply while the 4 main strength, full width bulkheads are 12mm (for the main or mast b/head ) and 9mm with laminated Western Red Cedar (WRC) timber beams.

The cabin and deck is strip planked WRC with double bias and triaxial f/glass fabrics.

WEST epoxy resin is used for all the strip planking and saturation

Structurally, the boat is very stiff compared to similar catamarans.

The accommodation layout is ideal for a live aboard couple with the large double berth in the main saloon. I lived aboard for 12 years while cruising and racing between Queensland and Thailand.

Summersalt never failed to impress with the roominess of her interior and her sailing performance, often embarrassing larger so called performance cruising catamarans. She has won many races not only in Queensland and Thailand but also in Indonesia. Her most notable performance was in winning the Cairns to Port Moresby Race in 1993, covering the 460 ocean miles in 35 hours and 58 minutes at an average speed of nearly 13 knots. Returning to Cairns from Port Moresby into winds of up to 30 knots, Summersalt was the only boat of the returning fleet to be able to fetch Cairns on one tack.

On a passage the boat is sailed very easily single handed or by a couple. Returning to Australia in 1992 after the first cruise to Thailand, Summersalt did the 2500 miles from Singapore to Thursday Island in 18 days thru the reef strewn waters of Indonesia. This passage was done 2 handed with the autopilot steering nearly all the time in mostly variable but following winds. The fact that the only form of charging for the single 75amp battery was one 42 watt solar panel is indicative of how easy the boat is on the helm, even in following seas.

In 2004 Summersalt had a refit in Phuket with the cabin being raised to give a head room of 1.58m in the saloon.

In 2007 all the standing rigging was replaced as were all the halyards. On one hull the bottom has a copper-epoxy treatment with antifoul on the other hull. I have the copper oxide powder for the other hull.

Construction

Hulls Sides  

225gr/m CSM and 750gr/m Triax outside / 12mm PVC Foam /  420gr/m Double Bias inside

Bilge Sections

Solid F/glass 225gr/m CSM and 3 x 750gr/m Triax 

Vinylester Resin used in the hulls layed up in a female mold

Underwing

12mm marine ply epoxy coated and 200gr/m PWC outside under and in cockpit

Main Bulkheads

12mm and 9 mm Marine Ply with laminated timber beams top and bottom and truss timbers.

All epoxy saturated.

Partial bulkheads, bunks, cockpit 9mm ply epoxy saturated and f/glassed with 200 PWC outside.

Deck and Cabin

Strip Plank Western Red Cedar   

11 mm Western Red Cedar with 420 gr/m Double Bias inside and outside forward of the main Bulkhead.

 Aft of the Main Bulkhead to the Cabin Bulkhead, main cabin has 750 Triax across the boat outside

and 2 laminated deck beams inside with 420 Double Bias inside

WEST Epoxy resin used throughout.

Mast and Rigging

Mast Section                                       All Yacht Spars IM 18  181 x 124 x 5.55 kg/m

Boom Section                                     Unknown  approx. 2.5 kg/m

All standing rigging, 1 x 19 s/s and halyards new in November 2007.

Masthead tricolour and white anchor light.

Mast steps to spreaders

Sails

Mainsail                         9 oz Bainbridge Hi Aspect Dacron new November 2007

                                    With stak pack cover new November 2007 

Genoa                           Radial cut Kevlar new November 2007. Has been used for one Kings Cup

                                    Regatta and 2 Phang Nga Bay Regattas.

Old Genoas                   One Cruising Spectra and one Cruise Laminate Mylar

No 2 Jib                        Radial Cut Dacron Fully Battened  1991 Still good

Storm Jib                      Dacron  1991  Still Good

Spinnaker 1                  Mc Diamid 1994 Still unbeatable in light winds but old.

Spinnaker 2                  Taskers  2002  Good sail

Reacher                        Dacron 1995 Useful off the wind cruising sail

Electrics and Electronics

Batteries                       2 x 225 amp 6 volt deep cycle

Solar Panels                  1 x 42 watt, 1 x 60 watt

Lights                           Fluorescent and Cabin Lights throughout.

Fridge                           Isotherm 2005

Log/depth                     ST40 Bidata  2005

VHF                              GME Electrophone with heavy duty cable to masthead antenna

Music                            CD/MP3 Disc Player and speakers

Invertor                        300 watt

Autopilot                       Raymarine ST2000+ Tillerpilot

Engine

New 9.9 hp Yamaha 4 stroke. 

Accommodation

Cockpit

Large cockpit has semi permanent (removable) soft bimini, new Nov 2007 with side cover add ons.

Deck Lockers

4 large deck lockers forward of the mast for gas bottle stowage, main anchor stowage,

secondary anchor and fender stowage and fuel locker.

Deck Gear

Main Halyard Winch on mast                             Barlow 21

Jib Halyard Winch on mast                                Andersen 16

Reefing winch                                                 Lewmar 10

Headsail Winches                                           2 x Barlow 24

Mainsheet Winches                                        2 x Barlow 21

Traveller Winches                                           2 x Barlow 10

Deck Gear mainly Ronstan all in good working order

Ground Tackle

35lb Manson CQR with 20metres 5/16” short link chain and 50 metres of 14mm nylon warp

22lb Danforth with 10 metres 3/8” short link chain

Miscellaneous

Stainless steel stanchions, bowrails and sternrails.

2.7 metre RIB with Yamaha 3hp outboard 

Specifications

LOA 9.98m
LWL 9.9m
BOA 5.85m
BCL 4.5m
Hull BWL 0.9m
Hull LWL/BWL 11.1
Displacement   
DWL  2700kg
OMR  2533kg
Cruising  4000kg 
Underwing Clearance 0.58m-0.62m
Headroom  
Hulls 1.9m
Saloon 1.58m
Draft  
Hull 0.41m
Rudders 0.65m
Daggerboards 1.6m
Sail Area  
Mainsail
 35m2
Headsail  17m2
Spinnaker  79m2 
Mast height above deck 12.2m 






 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Summersalt is offered for sale for A$155,000.

For further information including photos and drawings please contact mark@markpescottmultihulls.com

LOA                                                                                                            

LWL                                                                                                            

BOA                                                                                                            

BCL                                                              

Hull BWL                                                     

Hull LWL / BWL