Navy Proficiency Badges
1st Class
海軍優等徽章
Here are some photos of the 1st Class Navy Proficiency badges. There are 10 different badges,
according to Peterson. As you can see, I do not have an example for each one, so if anyone can
help with a photo, I'd appreciate it.

The title of each badge is that provided by Peterson. In parentheses I have put the English
translations I found in a Japanese source. That source called the 2nd Class badges 'Superior
Badges' and the 1st Class badges 'Superior Ensigns.' The English titles (names) are
somewhat different, too, and some may be more accurate than Peterson's choices.

Navy Proficiency Badges 1st Class page 2
Correspondence Proficiency Badge (Correspondence Superior Ensign)
通信優等徽章
Instituted on September 8, 1911 (Meiji 44)
Awarded to NCOs who passed the communications proficiency test, which included mastery of wireless
communications as well as code-writing and code-breaking. In addition, those who received the 2nd Class badge 3
times would receive a 1st Class badge.
Mine Proficiency Badge (Mine Operation Superior Ensign)
Instituted on April 14, 1919 (Taisho 8)
Notice of name change on February 23, 1929 (Showa 4)
'Minelaying will replace mine.'

This badge was mainly awarded to commanders of Mine Operation Units, Mine Layer Units, and Mine
Sweeping Units. There were three stages of the testing and all three had to be passed before this
badge was awarded. The tests were Mining Drills, Mining in Battle, and Mining Research.
Carpentry Proficiency Badge. (Refit Superior Ensign)
工作優等徽章
Instituted on April 22, 1930 (Showa 5)

Awarded to NCOs who could repair anything on a vessel, from artillery to torpedoes.
There was a course that they had to pass in naval engineering skills.
Gunnery Proficiency Badge.   (Bombardment Superior Ensign)
艦砲射撃優等徽章
Instituted on September 8, 1911 (Meiji 44)

Awarded to NCOs who were skilled at operating heavy naval artillery. The
course and subsequent test covered all artillery on board naval vessels:
large artillery, anti-aircraft artillery, machine guns, etc.

See close-ups of this case
HERE.
(Mechanic Handling Superior Ensign)
Instituted on September 8, 1911 (Meiji 44)
Announced on February 7, 1929 (Taisho 11)

I'm not sure of the reason between the date of the creation and the announcement of this badge.

Awarded to NCOs who were Navy machinists. They had to pass tests in war maneuvering, electrical maintenance and
operation, controlled fires, supplying water, supplying oil, etc.