沖

Kanji: 沖
Level: N1
Meaning: open sea
On'yomi: チュウ
Kun'yomi: おき
Strokes: 7
Common compounds: 沖合 (おきあい) offshore 沖積 (ちゅうせき) alluvial
Memory hook: Water (氵) in the middle (中) of the vast ocean.