Perfect for bass boats, center console fishing boats, flat boats or any vessel where a standard fiberglass antenna may be too obtrusive or impossible to install. A ratchet mount or rail mount with a center hole is required for passage of 15' coax cable which exits from the bottom center of the ferrule. Recommended mounts are models 366-H, 4187, 4189 or 4190. 36" stainless steel whip. 6dB performance.