Captain Cohen’s eyes twinkled at me. He was a delicate wispy-haired man who loved to play the fond Jewish grandpa. Often he could be charming, but sometimes I wanted to shout in his face, I’ve already got a grandfather! My occasional annoyance at Cohen, however, was nothing compared to Tut’s. Tut was utterly obsessed with our captain — particularly the possibility that Cohen might be a fraud. One night, Tut had walked into my cabin at three in the morning, sat on the edge of my bed, and whispered without preamble, "Nobody’s really called Abraham Cohen. It’s too much, Mom. Abraham Cohen. Abe Cohen. The name has to be fake. I’ll bet he’s never even met a real Jew. He steals all that Yiddish from bad movies. You want to help me pull down his pants and see if he’s circumcised?"

I’d declined. Tut left and disappeared for three days, during which time his only communication was a text message from the brig listing all the cultures besides Judaism that practiced circumcision.

There was more than one reason why Cohen would rather talk to me than to Tut.

"Youn Suu," the captain said, swiveling in his command chair to face the diplomats, "this is Commander Miriam Ubatu and Ambassador Li Chin Ho. Commander, Ambassador, this is Explorer Youn Suu. First in her class at the Academy." (Cohen always introduced me that way. I’d actually been second in my class, but every time I tried to correct the captain’s claim, he chose not to hear.) "Youn Suu will know what’s going on, you watch." He swiveled back to me. "Five minutes ago, we received a distress call from our embassy on Cashleen. There’s been trouble."