Bofors 57 mm Naval Automatic Gun L/60, a twin barreled 57 mm x 438 mm naval artillery gun/anti air autocannon based on the design of the Bofors 40 mm L/60 anti air gun.
Bofors 57 mm Naval Automatic Gun L/70, a single barreled 57 mm x 438 mm dual-purpose autocannon to replace the 57 mm L/60. Exists in several main variants ranging from Mark 1 to 3 (The Mark 3 is named Mark 110 in United States service).