Classic Sports Cruiser- aft open cockpit.
Length: 30ft 6"
Beam: 11ft 4"
Built by Bertrum Yachts USA in 1963, She one of the famous 'Bertrum 31s' whose hull was renowned for their seakeeping with a long production line, exported all over the world. She is one of the Ray Hunt 'Deep Vee' designs which revolutionised the International fast launch world of boating; Ray is the infamous designer of the Fairey & other marques of 'Deep Vee' hull forms.
At this time the concept of racing private fast launches across a course of open ocean water, was started by Sam Griffiths, a Miami boat yard owner, who teamed up with yachtsman Dick Bertrum to build a wooden design 'Moppie' named after Bertums's wife. Moppie was used as the GRP plug for moulding 'Glass Moppie', both these boats dominated the Miami Nassau Race across the rough Gulf Stream, knocking four hours off the event, as did the smaller Bertrum 25 and so the famous Bertrum boats were born, building over 1000 hulls in the first ten years using Cuban labour, sheltering from the cold war years.
Bertrum entered 'Blue Moppie' for the 1962 Cowes Torquay Race, considered to be the toughest race at the time, finishing second to Dick Wilkin's much larger Vosper Built 'Tramontana', with twin 1200HP each Isotta Fraschini engines.
Owing to her outstanding performance Tommy Sopwith ordered 'Thunderstreak' race number 400 for the 1963 Cowes Torquay race season, with a top speed of 47 Knots, fitted out inside to the race rule.
For the 1964 Cowes Torquay Jeffrey Quill of Vosper 'Tramontana 11' frame raced her, while Tommy drove 'Tramontana 11', Tommy Sopwith raced again in 1965, Keith Schellenberg purchased her for the Cowes Torquay 1966 & 1967 events and then R. Droxford took her in the 1969 Round Britain Race as number 955.
She has undergone a complete refurbishment with the current owner recently and is fitted with the original configuration power units, for her to compete in the Cowes Torquay Classic event last year, with a top sped around 44 Knots, using number 400h.
Glass Reinforced Plastic Hull & Deck with plywood or GRP scantlings. She was moulded in Miami by the Bertrum Yard as a standard 31ft. production boat.
Twin petrol Ford Big Block (Daytona family) fitted with Borg-Warner ahead & astern gearboxes, of 450HP each. These engines are new reconditioned units fitted two years ago during the refit.
The engines drive through V-Drive boxes, as was the custom, this gives a clear open cockpit. The shafts and propellers are traditionally mounted on P-brackets.
New fuel tank of 750 Litres.
Engine Instruments are in the port hand side helmsman's dashboard. Morse controls are twin lever for each engine as is the custom. Fire extinguishers are in the engine boxes. Electrics with isolating switches are 12 Volt. Steering is hydraulic to twin rudders.
Twin Kill switches.
Raymarine Chart Plotter & GPS
Twin 12 Volt batteries
Central entrance, open plan basic arrangement. A small sink & Jabsco Sea Toilet, are fitted on the port side. Fwd escape hatch.
A very large open cockpit, perfect for fishing or days afloat.
The twin engine boxes are towards the stern.
'Thunderstreak', is a Classic Bertrum 31, with famous sea-keeping qualities for the serious yachtsman who does not wish to bother about the weather. She would make a fabulous Sports Fisherman, with ability to reach the outer grounds quickly or a weekender with the large open cockpit for family outings or a support boat for the Ocean Racer Gentleman.
The petrol engines' usage is comparable to diesel and the owner declares approx. cruising consumption is 22 gallons per hour using 3000 RPM which gives her 40 knots, so one has traveled a long way or say 1.5 gallons per mile at speed.
We all know how the Classic car has become the ultimate enjoyment of today, Classic famous offshore powerboats are already attracting the same mystique & following, but they are very few in number. 'Thunderstreak' is one these and an opportunity not to be missed.
Viewing: River Hamble Price: £35.000 ONO