Home of San Antonio’s largest new boat & used boat dealer. Master Marine San Antonio, TX is conveniently located on Loop 1604 between Braun and Bandera roads in Northwest San Antonio. Serving San Antonio since 1997, we are the one of the oldest and the only locally owned boat dealerships in San Antonio, Texas. We are a short drive from San Antonio’s area lakes of Medina Lake, Canyon Lake, Calaveras Lake, and Braunig Lake and from the cities of Helotes, Hondo, Castroville, Bandera, Boerne, New Braunfels, and Seguin. Visit Master Marine today and a friendly and knowledgeable sales assistant will find the perfect bay boat, bowrider, pontoon, center console, or jet boat package for your boating lifestyle.