1. It use compass of your device to determine azimuth of the mark, with azimuth your relative position and direction that you must follow to safely avoid danger.
2. You should always keep device in horizontal position with 'head' towards the mark and double check azimuth with real compass.
3. Please use this nautical app, learn this small part of the rules and make your marine navigation bit safer.
4. Cardinal marks can help you learn which side of the mark you need to go.
5. My test showed that build-in compasses are not very accurate, specially in sea condition on boat.
6. Sailing out on ship without knowing 'rules of the road' is very dangerous.
7. This app is available on English and Croatian language.
8. Please visit my website for more nautical and sea related educational apps!
1. They dont know a thing what these buoys mean.The app while intended to be educational is very misleading - and I'd go so far as to say dangerous - as the yellow and black bouy the cardinal top marks are shown on are the same in each case.
2. Wheras the yellow and black markings on cardinal bouys also change depending on whether it's a N S E or W bouy.
3. Please use proper images of cardinal bouys rather than photoshop the top marks of the same bouy.
4. thanksOnly 4 buoys in full appBig thanks to creat this app.
5. That done, this would then become a useful app.Simple & easy to use, great app.
6. Would be great if can display when 'lighted' too.
7. no more needed to get a 5 star.
8. Plz improve it as much as possible .