However , the Mogami class was also plagued with technical problems due to its untested equipment .
However , the Mogami class was also proved to be unstable and top - heavy as well , due to cramming too much equipment into a comparatively small hull .
However , the Mogami class was also plagued with technical problems due to its untested equipment and proved to be unstable and top - heavy as well , due to cramming too much equipment into a comparatively small hull .