What significant mission did the NR-1 Nerwin conduct in 1986?

The NR-1 Nerwin, a deep-diving research submarine, played a pivotal role in the retrieval of parts from the space shuttle Challenger, which tragically disintegrated shortly after launch in January 1986. This mission was critical as it involved locating and recovering debris and sensitive materials from the ocean floor, contributing to the investigation of the disaster. The capabilities of the NR-1, including its ability to operate at great depths and conduct precise operations underwater, made it particularly well-suited for this mission, showcasing the importance of specialized submarines in post-accident recovery and investigation endeavors.