Welcome to the 9th anniversary issue of SubTel Forum, where we explore the evolving landscape of submarine telecommunications with a focus on defense and non-traditional cable systems. This issue delves into the innovative use of multipurpose submarine cable repeaters for climate change monitoring and the development of undersea distributed networks with open architecture connectivity. As we celebrate nearly a decade of providing insights and fostering discussions within the industry, we reflect on our journey from humble beginnings in 2001 to becoming a key platform for professionals in submarine optical fiber technologies. Join us as we continue to incite, entertain, and provoke thought in a positive manner, while embracing new technologies and methodologies to enhance the utility and enjoyment of our readers.