Celestial Navigator vs AIS Fleet

Celestial Navigation Calculator with - perpetual Almanac - star finder chart with animation. Use phone sensor for altitude. - calculation of lines of position ( intercept/delta ) - celestial object data - meridian passage calculation - running fix support - astronomical position calculations with two or more altitude observations - Hipparchus 150 star catalog - World chart with lines and position Program can be set to use device's sensors (gyro, compass) to position the star finder chart in real time. Capture celestial object approximate altitude. Correct Altitude with a Marine Sextant reading (not included). You still need a marine sextant to do celestial navigation, but the phone sensors may be used for training. Software for iPhone and iPad, with the same features. e-book with manual and celestial navigation tutorial.

AIS Fleet lets you watch the boats and ships on the water, from the harbour to the shipping lanes, all over the world’s oceans. If you like, follow the ones that matter to you: a friend’s boat on a circumnavigation, the cruise ship carrying your family, the ferry, the ship you want to photograph or your yacht club’s fleet. You are told when they get under way and when they arrive. You do not need a boat of your own. Watching the map is free and unlimited, following up to five boats is free, and the free plan does not expire. SEE WHAT IS ON THE WATER • Live AIS traffic from the AIS Fleet network of shore stations and contributing boats. • Open any boat for what AIS reports: type, flag, size, speed and course, when she was last heard, and her track. • Search by name, MMSI, call sign or IMO number. • Filter by vessel type, from sailing boats to cargo ships. FOLLOW THE ONES THAT MATTER • Follow any vessel on AIS and tag along on her adventures and journeys. • Departures and arrivals reach you by push notification, by e-mail or in the app. • Make lists to group the boats you follow, and subscribe to lists other members share. FLEETS • Clubs, rallies and associations put their boats on one fleet map with one chat. The organizer adds your boat and you are in at once. MESSAGES AND PHOTOS • Write to the boater behind a boat you follow, to anyone who follows yours, and to your fleet mates. You can block anyone. • Photograph a vessel for the shared catalog, and see the photos others have contributed. DO YOU HAVE A BOAT? • Claim her with her MMSI and a document that shows she is yours. Her followers can write to you, and she can join fleets. • A boat is optional, but it enhances the experience. DO YOU HAVE AN AIS RECEIVER? • Connect an AIS receiver on your boat’s Wi-Fi and the boats it hears join the map within seconds while the app is on screen. What it hears is contributed to AIS Fleet, which is how there is coverage where no shore station reaches. • A receiver is optional; it enriches the experience but is never required. Terms of Use: https://aisfleet.com/terms/ Privacy Policy: https://aisfleet.com/privacy/