create your own visited country map
or write about it on the open travel guide
I left off the places where I've been in straits where territorial waters overlap (Oman), and the countries that I saw either on the horizon or radar screens, even though I was in the area for a while. (That would include Iran, Iraq, Kuwait, Saudi Arabia, Pakistan, and probably a few others.) And I didn't include places where a plane I was travelling on stopped for fuel and passengers, like The Azores, Spain, Italy, and Saudi Arabia.
I had to go back and edit once they changed their page. Had me popping up all over the world in places ships can't quite reach, lol.