Scanstrut is a leading company in the design and production of solutions for the installation of marine electronic equipment. However, it does not appear to offer a specific line of rocker switches.
As for rocker switches for marine use, there are several options on the market designed to withstand marine conditions. For example, the Marine R Series complete rocker switch is waterproof with an IP67 protection rating and features an LED indicator light that illuminates when activated. This switch is recommended for navigation lights and bilge pumps.
Another option is the Marine Top waterproof rocker switch, which offers an IP56 protection rating and is available in 12/24 Volt models, also with backlighting for better visibility in low-light conditions.