Hello lovely sword people! I have a Japanese sword that was given to me by my teacher. He did not give me the translation when he gave it to me, but told me it was several centuries old and made in Japan. I would really love to identify the maker, and anything else the inscription brings.
I have some understanding it makes some comment about the sea. I'll add some pictures, more upon request. I've tried my best to clean up the Kanji in a png.