Expertly designed to install your antenna on the cabin roof, flybridge or radar arch of your powerboat, providing a clear view of the horizon for maximum antenna performance. Pre-drilled mounting holes, the antenna fastens to Power Tower top plate using its own mounting bolts. Internally mounted Scanstrut DS30 cable seal. Marine sealant not required. No need to cut cable of remove plugs. Inserts included to fit cables from all major radomes.