From the Konrad site.
Maximum recommendation: 1000 Nm (738 lb. ft.) of torque for diesel or gas applications. Maximum operation: 250 hours per year for planing type hulls of highly intermittent operation. Gross weight to horsepower less than 12.2 kg/kw (20 lbs./hp). This classification includes private, non-commercial, non-charter, sport/leisure activity craft. Long range pleasure cruisers, sport fishing charters and commercial service craft are NOT in this service classification. Standard warranty.