Why is this site called mrbowditch.com and who was Mr. Bowditch?

That came from a Newberry Award winning book I read to my kids, “Carry on Mr. Bowditch,” about a famous mathematician who was also a sailor, and who would learn the language of a country with nothing but a Bible and a… dictionary! And who ended up saving thousands of sailor’s lives via his update of some famous navigational charts.