Chief Petty Officer	Petty Officers 1st Class	Petty Officers 2nd Class	Leading Seaman	Chief Seaman	Seaman 1st class
兵科 [hei ka]		Seaman Branch
上等兵曹 [jōtō heisō]	一等兵曹 [ittō heisō]	二等兵曹 [nitō heisō]	水兵長 [suihei chō]	上等水兵 [jōtō suihei]	一等水兵 [ittō suihei]

Other Branches
飛行科 [hikō ka] Aviation	整備科 [seibi ka] Ground Crew	機関科 [kikan ka] Engineering	工作科 [kōsaku ka] Construction	技術科 [gijutsu ka] Technical	衛生科 [eisei ka] Medical	主計科 [shukei ka] Paymaster	軍楽科 [gungaku ka] Bandsman

特技 [tokugi]	Training Insignia		善行章 [zenkō shō]	Good Conduct Chevrons
普通科特技 [futsū ka tokugi] Basic Training	高等科特技 [kōtō ka tokugi] Advanced Training		善行章 [zenkō shō] Good Conduct	特別善行章 [tokubetsu zenkō shō] Excellent Conduct	善行章二線 [zenkō shō nisen] Double Chevron	善行章三線 [zenkō shō sansen] Triple Chevron

Sources:

1. Gary Nila, “Japanese Naval Aviation: Uniforms & Equipment 1937-1945”, 2002
2. 日本海軍軍装図鑑: 幕末・明治, Etsuka Yagyu “Uniforms of Japanese Navy 1867-1945”, 2003
3. Gary Nila, Robert A. Rolfe “Japanese Special Naval Landing Forces: Uniforms & Equipment 1932-1945”, 2006
4. 大日本帝国陸海軍―軍装と装備 明治・大正・昭和, Tadao Nakata “Imperial Japanese Army and Navy Uniforms & Equipment”, 2009