Celestial navigation - Astronavigation Sight reduction: - MarcqSaint Hilaire Line of Position, intercept method (p=Ho-Hc, Zn) -Input for observed altitude Ho or instrumental Hs (Nautical Almanacdata needed for the Sun and the Moon) - Calculator: altitude Hc andazimuth Zn - Running fix - Plots up to 3 Marcq Saint Hilaire Linesof Position on Google maps - Local hour angle (LHA) Sight reductionis the process of deriving from a sight the information needed forestablishing a line of position. This app is a calculator to getthe intercept from the assumed position of the observerAP(latitude, longitude), the geographical position of the celestialbody observed, GP(Dec, GHA), and its corrected altitude Ho. Manualand examples in the developer's website. Ref:https://en.wikipedia.org/wiki/Sight_reduction User interface: -Zoom buttons +/- - Map types: standard, terrain, and satellite -GPS location. ("Location" App permission must be allowed. Switch onyou GPS, and then automatic location detection is possible)

Offline GPS tracker for boat navigation. GPS Chartplotter forSailing & boating

Your tablet or smartphone as a personal navigation system on board.

The Lowrance companion app. Fishing Maps & Trip Planner

Transas iSailor is an easy-to-use navigationalsystem developed for the amateur seafarers. Intended for use onboats and yachts, iSailor provides a clear presentation ofnavigation information and electronic charts. Transas own TX-97vector chart format supported by iSailor is recognized worldwide asone of the most accurate and reliable sources of navigationalinformation.Available Chart Folios cover coastal and offshore waters of NorthAmerica, Latin and South America, Europe, Africa, Middle East, FarEast, Asia, Australia & New Zealand. All chart folios can beselected, purchased and downloaded via the Transas iSailor appusing its Chart Store section. Purchased chart folios includes aone year Chart Updates subscription service of your chosencoverage. At the end of one year you can choose to renew your ChartUpdates subscription service or continue to use the charts youpreviously purchased and downloaded.• Positioning system:- Internal GPS (if available, through the Android LocationProvider)- NMEA GPS over Wi-Fi (TCP/UDP connection)- AIS class B Transponder (TCP/UDP connection)- Bluetooth NMEA GPS through the Android Location Provide("Bluetooth GPS Provider" app is needed)• Navigation sensors support: GPS, Compass & ROT (True orMagnetic Heading), Wind, Echo-Sounder• AIS targets support: AIS Class A, AIS Class B, AIS Receiver, BaseStations, Aids-to-Navigation (AtoN)• Display of Charts and Routes• North Up, COG Up and Route Up chart orientations• Information on any vector chart objects• Free cursor, Point-To-Point and Own Ship referenced ERBLfunctionality• Monitoring of navigational data: Position, Course (COG) and SpeedOver Ground (SOG)• Route creation by the graphic methods. “Go To” routes• Alarms & Warnings• Waypoint monitoring: Bearing to WP, Distance to WP, XTD• Schedule information: Time-To-Go and ETA to any selected waypointahead• Day and Night chart palettes• Track recording• Import & Export for Tracks and Routes• Multi-UnitsCompatible with Android versions since 4.4.x (API level 19) andhigher!List of supported and tested devices:Tablets:• Google Nexus 7 (2013)• Samsung Galaxy Tab S• Samsung Galaxy Note 8.0• Samsung Galaxy Tab Pro 8.4• Samsung Galaxy Note 3• Sony Xperia Z2 Tablet• Lenovo A3300-HV• Lenovo YOGA Tablet 2 ProSmartphones:• Samsung Galaxy S4• Lenovo S60• Samsung Galaxy A3• HTC Desire 630• Asus ZenFone Z00ADWe cannot guarantee correct operation on non-tested devices. Ourteam will continue to improve the application performance, keepingyou informed about our progress in the upcoming releases.iSailor web site http://www.isailor.usAny questions? Feel free to contact us at support@isailor.usSincerely Yours,Transas iSailor team

DONIA - Enjoy & protect the sea, together!DONIA est une application de cartographie marine communautairepour smartphone et tablette. Elle est destinée aux plaisanciers,plongeurs, pécheurs et à tous les amoureux de la mer qui souhaitentbénéficier de cartes précises, enrichies de données sur la viemarine et d'informations en temps réel sur les activités ensurface.DONIA, c’est avant tout une communauté de passionnés quiéchangent des informations pour rendre leurs sorties en mer plusriches en découvertes et qui veulent contribuer à protégerl'environnement.DONIA œuvre et sensibilise à la préservation de l’environnementen fournissant des cartes de la nature des fonds extrêmementprécises qui permettent aux plaisanciers de Méditerranée de jeterl’ancre en dehors des herbiers de posidonie protégés.DONIA c’est aussi plus de sécurité à bord. L’application proposede vivre la traditionnelle solidarité maritime en partageant desinformations sur les dangers aperçus en mer (obstacles, accidents,méduses, etc.).Enfin, les utilisateurs de DONIA peuvent recevoir gratuitementdes informations de la part des gestionnaires de sites protégés(parcs, réserves). Pratique pour éviter les démarches fastidieuseset trouver la réglementation locale facilement.En options payantes, vous pouvez bénéficier:- D'un pack alarmes graphiques (Alarmes anti-dérapage,anti-collision (au mouillage), anti-emmelage de chaînes). Lesalarmes sont transférées sur un autre téléphone par sms en cas debesoin (coût d'un sms).- Vous pouvez aussi acquérir des cartes de bathymétrie trèshaute résolution et en 3D. Ces données, acquises au sondeurmulti-faisceaux par la société spécialisée Andromède Océanologie,sont environ 1000 fois plus précises que les cartes classiques.Vous voyez la vraie forme des reliefs, les failles, etc.Attention l'utilisation continue du GPS en tâche de fond peutréduire considérablement la durée de la batterie.DONIA - Enjoy &protect the sea, together!DONIA is a community marine mapping application for smartphoneand tablet. It is intended for boaters, divers, fishermen and allsea lovers who want accurate maps, enriched data on marine life andreal time information on surface activity.DONIA, is above all a community of enthusiasts who exchangeinformation to make their outputs richest offshore discoveries andwant to help protect the environment.DONIA work and awareness to preserve the environment byproviding maps of nature extremely precise funds that allowMediterranean boaters to anchor outside the protected Posidoniameadows.DONIA is also more safety on board. The application offers livetraditional maritime solidarity by sharing information about thedangers at sea surveys (obstacles, accidents, jellyfish, etc.).Finally, users DONIA can receive free information from managersof protected sites (parks, reserves). Convenient to avoid thetedious steps and find local regulations easily.By paying options, you can benefit:- A pack graphics alarms (Alarms anti-skid, anti-collision (atanchor), anti-tangle of strings). The alarms are transferred toanother phone via SMS in case of need (cost SMS).- You can acquire high resolution bathymetric maps and 3D. Thesedata, acquired multibeam echosounder by the specialized companyAndromeda Oceanology, are about 1000 times more accurate thantraditional cards. You see the true form of reliefs, faults,etc.Caution Continued use of GPS running in the background candramatically decrease battery life.

The B&G companion app. Offline maps for boating and sailing.

Professional marine navigation for your Android device.

US Charts from NOAA, ACoE Surveys, Marine Forecasts, Anchor Alarmand more...

Find&log fishing spots, catches, get free weather forecast,connect with anglers

Great Circle and Rhumb line routes