The National Modified hydroplane (NM) offers speeds of 140 mph to the serious competitor, utilizing automotive and marine non-supercharged engines ranging from 4-cylinder and V-6 up to 368 cubic inch V-8 engines, carbureted and fuel injected. RequirementsMinimum Age: 16 years oldMinimum Length: 17'-19' depending on engine typeEngine: 4 cylinder, V-6 and up to 368 cubic in. V-8 configurationsSpeed: 140 MPHMinimum Weight: 1255-1900 lbs. depending on engine typeFuel: Methanol (alcohol) or racing gasoline per APBA specs
