This is, of course, a listing of all the powers and attacks she uses in the manga. This listing includes the Japanese text, a romanization of the power, and a lot of other little things.

Transformations

Neptune Planet Power! Make Up!

Romanization: nepuchuun puranetto pawaa! meiku appu!
Power First used: Act 27, Volume 08
Item used: none shown
Description: She called out this phrase to transform into Sailor Neptune.

Neptune Crystal Power! Make Up!

Romanization: nepuchuun kurisutaru pawaa! meiku appu!
Power First used: Act 39, Volume 14
Item used: Neptune Crystal
Description: Used to transform into Sailor Neptune.

Deep Submerge

Romanization: diipu sabumaaji
Power First used: Act 26, Volume 08
Item used: none
Description: The kanji used with this manuver means 'deep water drown' but the furigana shows that it should be spoken as Deep Submerge.

Submarine Reflection

Romanization: sabumarin rifurekushon
Power First used: Act 31, Volume 09
Item used: Deep Aqua Mirror
Description: The kanji used with this manuver means 'deep-sea reflection' but the furigana shows that it should be spoken as Submarine Reflection.

Submarine Violon Tide

Romanization: sabumarin vioron taido
Power First used: Act 43, Volume 16
Item used: Marine Cathédrale
Description: The kanji used with this manuver means 'deep-sea hand-held string instrument tide' but the furigana shows that it should be spoken as Submarine Violon Tide.

Galactica Violon Tide

Romanization: gyarakutika vioron taido
Power First used: Act 50, Volume 18
Item used: Marine Cathédrale
Description: She used this attack only when she was under Galaxia's control.