Translation for sake cup

[Remka]

Hello everyone,

Could you help me translate the inscriptions on this sake cup?

Thank you so much.

[GHP]

海軍 満期 記念 芳賀
Kaigun Manki Kinen Haga
Navy Term-Fulfillment Commemoration Haga
The last two kanji on the bottom, Haga, are the sailor’s surname.

— Guy

[Remka]

Thank you very much for your help Guy.

Maybe this cup was give to a new Imperial Navy soldier at the end of his military training?

Best regards.

[GHP]

Thank you very much for your help Guy.

Maybe this cup was give to a new Imperial Navy soldier at the end of his military training?

Best regards.

This cup was purchased by the sailor to commemorate his completion of service (full term of three years or whatever). According to Nick Komiya, the cups would have been given to supporters, family, or friends. [If I remembered that correcly.]

— Guy