Nightwatches with the milky way above you can be fantastic. Orion and Sirius, or the moon, are leading the way. Dark cloudy nights with high waves and gusty winds, however, may make it difficult for two tired nightwatch sailors to set the right sails and to find the best route. Faced with a black sea and a black sky, they have to rely solely on instrumental navigation with monitors and displays. In the morning after such a challenging nightwatch, they look back to the east, watch the rising sun and count the miles they made to the west.