The Type 1936 was a large and very powerful design mounting 5.9-inch guns, based on the general layout of the Type 1934. The intended twin turrets were not available in time, so planned armament was reduced to single mounts in some positions. As with the preceding class, an enlarged version, designated Type 1936A, was developed from the original. The Type 1936A was more seaworthy, with much more reliable machinery. These vessels were known to the Allies as the Narvik-class. —description from the publisher