RA-H4: Horizontal Mount for 8 to 12" Combos (RAM-D-111U-C)

The RAM-D-111U-C mount, identified as RA-H4, is a robust mounting solution designed specifically for marine chartplotters and displays from 8 to 12 inches. Part of RAM Mounts’ "D" series, it stands out for its ability to handle higher loads and provide increased stability—a critical requirement for electronics of this size in dynamic marine environments.

Its practical value lies in securely fastening medium to large displays on vessels subject to significant motion, such as RIBs, rigid inflatables, or offshore cruising sailboats. The horizontal base design allows stable installation on flat surfaces like helm consoles, dashboards, or reinforced bulkheads. This setup is ideal for primary helm stations or flybridges where screen visibility and a very stable mount are essential.

From an installation perspective, this mount requires a solid mounting surface capable of supporting not only the chartplotter’s weight but also the mechanical stresses from shocks and vibrations. Securing the base by drilling is a key step to ensure long-term reliability. Its heavy-duty construction contributes to the sense of solidity and durability it provides once installed.

Compared to lighter mounting solutions (RAM Mounts B or C series), the RA-H4 is the appropriate choice when the size and weight of the device justify a Class D mount. It prevents unwanted screen movement that can occur with undersized mounts, improving readability and operational safety. However, it’s important to note that this robustness comes with a larger installation footprint and intrinsic weight to consider for small consoles or applications where every gram counts.

In summary, the RA-H4 is a reliable option for demanding users who prioritize the security and stability of their 8 to 12-inch navigation equipment, particularly in rough sea conditions.