Writers out there... is this a good idea?

A cryptographer and brilliant mathematician gets on a cruise ship heading to Mexico. He doesn't' like to interact with people and has turned down several desirable women's offers for a "good time". So far, his trip seems wasted on sipping drinks at the bar and listening to the wonderful singer and pianist for nearly the entire week. On the eighth day of cruising, some drunken idiots deeply offend the cryptographer when he tries to make a move on the female pianist. None of them knew that in the next few hours, the nerdy man would save their lives from the perils of the open ocean.