“Hi, I’m Hannah” I smiled as I held out my hand. “Hello,” the bearded man replied, with a gruff shake. The three of us started up a brief conversation. I discovered one owned a trawler in New England, and the other planned to charter a sailboat in the Caribbean for vacation. When the instructor arrived, as he scrolled through his roster, he showed no sign of surprise that a girl was taking his class. A seasoned diesel mechanic and teacher, he proceeded to lead us through a series of PowerPoint slides, explaining the necessary balance among air, heat and fuel needed to propel a diesel.