AIMM Mission To commemorate Americas rich naval and maritime heritage through the preservation and exhibition of historic naval vessels with an emphasis on the era of World War II through the present.About Arkansas Inland Maritime MuseumThe Arkansas Inland Maritime Museum (AIMM) opened its doors on May 15th, 2005. Centered around the submarine USS Razorback (SS-394), a veteran of World War II, the Vietnam War and the Cold War and soon to feature the historic tugboat USS Hoga (YT-146), AIMM is more than just a military museum.