If you have toured coast to coast using the sun, you also have the best tactic available to stay found, namely paying attention to your surroundings. I am astonished that that highly trained and motivated naval officers as well as crews of other vessels, with the most modern equipment, still crash into each other. Just a few years ago an Italian cruise ship ran aground and sunk. Some years back, maybe 25 or so, a US sub surfaced under a Japanese fishing vessel near Hawaii and sunk it. It seems clear someone was not paying attention to the job at hand. While technology is a useful tool, we are not absolved from the basics.