The B619 model have been the standard in low-profile models for many years. Their large sensitive ceramics allow deep echosounding up to 206M (700′). These nearly flush units minimize drag as only 5mm (2/10″) of the housing extends outside of the hull. The bronze B619 provides a vertical beam without a fairing. Inside the housing, the ceramic element is tilted to provide built-in deadrise compensation. The resulting vertical beam provides excellent echo returns for moreaccurate depth readings.