The Osborn 42 Catamaran is a collaborative project between Bruce Osborne and Dave Calvert (Calvert Sail-loft).  The hulls are based on the fast and proven Super Shockwave 42 by legendary multihull designer Lock Crowther of Australia.   Morelli and Melvin (Playstation maxi cat designers) did the structural engineering, and the underwater foils were designed by Bill Roberts (designer of the Supercat and RC27 and 30).

Osborn and Calvert set out to build a cat that could be ultra competitive in open water racing, and cruised in relative comfort.  The builders utilized carbon fiber, epoxy and Corecell construction to make her incredibly light and strong, weighing in around 7,500 lbs.  A 16:1 hull fineness ratio makes her incredibly fast and stable.  With her high-tech construction, deep daggerboards and spade rudders, this cat will outpoint any other cat of similar size to weather.

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‘Green Flash’ raced the Miami to Nassau race in ’05 and ’06, winning both in corrected time and first to finish. Her previous owner reports her top speed was 27 knots in race mode.   She now cruises between 8-12 knots in her current configuration. 

Her previous owner of 7 years had taken the boat one step further and had customized her into a true blue water fast cruiser.  Green flash safely cruised from the Gulf Coast of FL, through the South Pacific, Hawaii and now is in Seattle.

Green flash is a one of a kind catamaran that will appeal to go-fast sailors that prefer boat speed over extravagant interiors. 

Anchoring Equipment



Green Flash features a custom carbon fiber pilot house with forward opening glass windshields.  The pilot house is home to a center line drop leaf table and settees to port and starboard.  She is set up with tiller steering.  Access to the cabins are accomplished via separate companionways for the port and starboard hulls will canvas dodgers.  Each hull features a stateroom aft of midship with queen size berth.  Aft of each stateroom there is a closet and storage area with access to the steering system.  Forward of the stateroom in the port hull is where the custom carbon fiber galley and head compartment are located.  The starboard hull is identical in layout, but features a nav-station midship and forward of the chart table is storage in lieu of a marine head. 

Hull, Mast, and Rigging

Sails and Hardware




LOA : 42ft

Beam 25 ft 3in


Dry Weight : 8000 lb


Windlass: Electric Lewmar Windlass 12V

Electric Circuit : 12V


Fuel Tanks #: 2

Fuel Tanks Capacity:17 gal

Fuel Tanks Material:Plastic

Fresh Water Tank

Fresh Water Tanks #:3
Fresh Water Tanks Capacity:35 gal
Fresh Water Tanks Material:Plastic


Number of twin berths:2
Number of Cabins:4
Number of Heads:1


#1 Engine Make:Yamaha
Engine Year:2020
Primary Engines:Outboard-4S
Power:9.9 hp
Engine Model:9.9hp
Fuel Type:Gas/Petrol
Propeller Material:Aluminum
Propeller Type:3 Blade
#2 Engine Make:Yamaha
Engine Year:2015
Primary Engines:Outboard-4S
Power:9.9 hp
Engine Model:9.9hp
Fuel Type:Gas/Petrol
Propeller Material:Aluminum
Propeller Type:3 Blade
#3 Engine Make:Yamaha
Engine Year:2016
Primary Engines:Outboard-4S
Power:50 hp
Engine Model:50hp
Fuel Type:Gas/Petrol
Propeller Material:Aluminum
Propeller Type:3 Blade

Recently Reduced to $ 150,000 USD

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