Should Argonaut, Narwhal, and Nautilus be classified as cruiser submarines?
Short answerThey were fleet submarines, though cruiser submarine also fits their cruising range and surface speed; the guns were not intended for pitched surface battles.
NotesArgonaut, Narwhal, and Nautilus were fleet submarines. The cruiser-submarine label also fits in the sense of long cruising range and surface speed. Their 6-inch guns are recalled as a way to sink targets more quickly. Open mounts without gun shields did not equip them for a pitched surface gun battle.