Oceans — to state the obvious — are big. That makes it hard for governments, shipping companies, and insurance providers to know exactly what’s happening on them at any particular moment. It doesn’t help that modern-day ships often aren’t equipped with modern technology or the right software behind those sensors to properly analyze what they see. Quartermaster, an Arlington, Virginia-based startup, is building a solution to this problem that it calls “SmartMast.” It’s quite literally a package o...