Comprehensively restored in 2007, totalling approximately 2,500 man-hours
Repainted with 18 coats of Epifanes varnish in 2024
Documentation included covering all work carried out
Sale includes a dedicated, registered trailer
The Appeal
Boesch Motorboote AG has been handcrafting luxury mahogany motorboats in Switzerland since 1910, and is widely regarded as the Swiss equivalent of Riva, a name synonymous with discreet prestige on the lakes of central Europe. The 510 Ski Boat, with its V8 power and traditional plywood-over-frame construction, represents the marque's sporting character at its finest, purpose-built for towing water skiers.
This 1971 example has passed through just three owners from new and comes with a paper trail documenting all work carried out during its life. In 2007, it underwent a thorough restoration supervised by Peter Jacobsson of Skaftö, Sweden, encompassing structural repairs, a mechanical overhaul, and numerous upgrades over the course of some 2,500 man-hours. More recently, in 2024, the hull was refinished with 18 coats of Epifanes varnish and further restoration work was completed in Poland. A pre-season service covering the engine, fuel system and onboard installations was carried out in 2025. Sold with its own registered trailer, this is a rare opportunity to acquire a well-documented, professionally maintained classic from one of the most respected names in boatbuilding.20240825_192933 Jakub Polkowski.jpg2.29 MB
Pre-season service completed in 2025, covering the engine, fuel system and installations
The vendor states the boat is mechanically checked and ready for use
2007 restoration included replacement of the propeller strut and drive shaft, elimination of fuel system leaks, and replacement of rotten structural elements
Transom crack below the waterline repaired and a crack in the hull planking addressed during the 2007 works
Damaged foredeck repaired and reinforced with 5mm plywood
Cooling system hoses replaced and an internal cooling system with glycol fitted to protect the engine block
Bilge pump and automatic controls repaired
Exhaust manifold serviced
Ribs fastened with through-bolted stainless steel screws
New mahogany plywood interior with storage compartment fitted
New fuel gauge installed
Battery box repositioned higher for safety
Water-ski tower mounts reinforced
Folding front V-seat with locking mechanism installed
Hull bottom prepared and painted with antifouling paint
Stainless steel reinforcements added
Electrical installation inspected
Mahogany plywood construction using traditional boatbuilding techniques
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