A marine wiper arm is a component of a windshield wiper system on boats and other marine vessels. It is typically a slender, metal or composite arm that connects the wiper motor to the wiper blade. The wiper arm moves in a back-and-forth motion, powered by the wiper motor, to sweep the wiper blade across the windshield or clear view screen. Its design ensures efficient removal of water, rain, or debris, maintaining a clear field of vision for safe navigation in maritime environments.