Akei-bow-no, what do the kanji on that sign mean?

Uh, in English... "Ssumo-king Err-ia," is how you'd say it

Smoking Room

A Sumo King... is it?

Are you telling me that the naval base has a royal wrestler?!

Not a wrestler! And it's not me! Akebono was the name of a famous professional sumo wrestler, the shipgirl mentions that she's not a sumo wrestler in her library chatter.