The Consilium SD4-5 is a robust and reliable digital display unit designed for marine navigation systems. As a key component of the Consilium SAL Speed Log ecosystem, it provides clear, at-a-glance readings of a vessel’s speed and distance traveled. The display features a high-contrast dot matrix screen with adjustable backlighting, ensuring excellent readability in all light conditions, from bright daylight to a darkened bridge at night. The intuitive front panel allows for easy operation, with dedicated buttons to switch between speed units (knots and m/s), display water temperature (WT), and test the display functions. Built for the demanding marine environment, the SD4-5 is housed in a standard 144×144 mm DIN case for straightforward panel mounting, making it an essential instrument for safe and efficient navigation.