Just before sunset, nine hundred nautical miles from shore, three sailors and a dog jump into in a four-person liferaft as waves crash around them. For four hours they bail water by the gallon, surrounded only by a vast and encroaching darkness.
In recent years it has become more feasible than ever to navigate using a smartphone or tablet. Apps have improved to the point where they rival paper charts and chartplotters. With so many good navigation apps available, the question is: which is best for you?