SeaNav
Marine Charts and Navigation
Free · In‑App Purchases · Designed for iPad
UI Update for iOS26
SeaNav combines high-resolution marine charts, route planning and real-time navigation in one simple boating app for your iPhone, iPad and Apple Watch.
Charts, Autoroute planning, AIS ship tracking, tides and weather in one powerful and affordable navigation app.
Built from official hydrographic data with extensive coverage across North America, Europe and Australia.
Professional marine navigation features including:
Planning
• Create and edit routes with auto-routing for creating waypoints
• Measure distance & bearing
• Import & export GPX routes
• Tides, Streams & Weather
• Works offline
Navigate with Confidence
• Real-time GPS navigation
• Course Up & North Up modes
• ETA, XTE, VMG, SOG & COG
• Sailing HUD display
• Background navigation
• Automatic Waypoint advancing & alerts
Live AIS & Safety (Optional IAP)
• Real-time AIS ship positions
• Collision alarms
• AIS position sharing
• Internet AIS integration
• Free AIS when used with Boat Beacon
• MOB and Anchor alarm (IAP)
- NMEA Link for Depth, Wind & AutoPilot
- Real time local wind feed and Sailing laylines display (IAP)
Alongside this SeaNav offers advanced onboard capabilities rarely found in a single app:
Apple Watch app
SeaNav for Apple Watch is included at no extra cost, giving you route data, key navigation information and quick access controls directly from your wrist.
Sophisticated AIS Display and Position sharing
The leader in the field with global coverage and clear, information-rich vessel tracking with intelligent filtering and collision prediction tools.
CPA and TCPA alerts help you assess risk early and act confidently.
Augmented Reality View
Overlays navigation, AIS and chart data directly onto the real-world camera view for intuitive situational awareness.
Includes night mode support for compatible thermal cameras such as FLIR.
SeaNav Autoroute and Autopilot Integration
- Just choose where you want to go and SeaNav will create the route for you
- Go one step further and let SeaNav pilot the route with compatible autopilot systems from Raymarine, SIMRAD, Lowrance and B&G
SeaNav comes with a built-in tutorial mode with free access to all features including charts, AIS, AR & wind
The free version includes all navigation and trip planning tools. High resolution vector charts are available by In App Purchase (IAP) including updates for 12 months.
Requirements:
GPS only required for real time route navigation. Optional Real time AIS, Tides and Weather information require an active internet connection.
WiFi-only iPad will need an external GPS receiver for navigation.
Please note that continued use of GPS running in the background can dramatically decrease battery life.
Subscriptions
Our in-app purchases are 1 year subscriptions, which automatically renew at the end of the subscription period unless auto-renew is turned off at least 24-hours before the end of the current period. Payment will be charged to your iTunes Account at confirmation of purchase, and will be charged for renewal within 24-hours prior to the end of the current period.
Subscriptions may be managed by the iTunes account holder and auto-renewal may be turned off by going to Account Settings after purchase.
No cancellation of the current subscription is allowed during active subscription period.
NOTICES: This product has been derived in part from material obtained from the UK Hydrographic Office with the permission of the UK Hydrographic Office, Her Majesty’s Stationery Office.” “© British Crown Copyright, [2026]. All rights reserved.
The UK Hydrographic Office (UKHO) and its licensors make no warranties or representations, express or implied, with respect to this product. The UKHO and its licensors have not verified the information within this product or quality assured it.
Terms of Use: http://seanav.net/termsofuse.php
Privacy Policy: http://seanav.net/privacy.php
Support: help@pocketmariner.com
more
Had this installed for a while and I’m now beginning to use it. Integrates well with my Wind Instrument. The building of routes and importing waypoints stumped me but after reading the Help document.After working with the app and companion app Boat Beacon, I am really impressed. Excellent response from help desk/support and they want user feedback to guide their future app updates. I am changing my rating from 4 to 5 stars.
Had this installed for a while and I’m now beginning to use it. Integrates well with my Wind Instrument. The building of routes and importing waypoints stumped me but after reading the Help document.After working with the app and companion app Boat Beacon, I am really impressed. Excellent response from help desk/support and they want user feedback to guide their future app updates. I am changing my rating from 4 to 5 stars.
I am not picking up no vessels or no ship traffic at all on this app and I just got charged last night another $30. Thinking about canceling this app
Developer Response Hi, that doesn’t sound right. Can you please email us at help@pocketmariner.com so we can get you up and running againBest regardsThe Pocket Mariner crew
I am not picking up no vessels or no ship traffic at all on this app and I just got charged last night another $30. Thinking about canceling this app
Hi, that doesn’t sound right. Can you please email us at help@pocketmariner.com so we can get you up and running againBest regardsThe Pocket Mariner crew
I have had SeaNav for a year now and have learned to trust it. It is just as accurate as any high dollar system and is easy to use.
I have had SeaNav for a year now and have learned to trust it. It is just as accurate as any high dollar system and is easy to use.
Love knowing what went buy in the middle of the night when anchored. And what’s coming by before I can see it! Catalina 380 Hull 123
Love knowing what went buy in the middle of the night when anchored. And what’s coming by before I can see it! Catalina 380 Hull 123
Update for US NOAA paper charts and iPad map/satellite mode switching
5.5.3 Apr 14
SeaNav autoroute:
Set start and end point for a route and let SeaNav propose a route and waypoints.
SeaNav AutoPilot:
Navigate routes automatically. SeaNav can now remotely control Raymarine and Navico/Simrad/Lowrance Auto tillers and helms. You can also use the free SeaNav Apple Watch app to control a Raymarine autohelm and tiller from your wrist.
5.5.2 Mar 31
SeaNav autoroute:
Set start and end point for a route and let SeaNav propose a route and waypoints.
SeaNav AutoPilot:
Navigate routes automatically. SeaNav can now remotely control Raymarine and Navico/Simrad/Lowrance Auto tillers and helms. You can also use the free SeaNav Apple Watch app to control a Raymarine autohelm and tiller from your wrist.
5.5.1 Mar 16
SeaNav AutoPilot
Navigate routes automatically . SeaNav can now remotely control Raymarine and Navico/Simrad/Lowrance Auto tillers and helms.
You can also use the free SeaNav Apple Watch app to control the autopilot and tiller from your wrist.
Route to first waypoint or Goto Waypoint now draws with a dotted blue line.
Waypoint skipping option added (see Advanced Settings):-
• Standard route navigation: Leg is from previous → next waypoint.
• Direct-to navigation (default): Leg is from current position → next waypoint.
Improvements to Cross Track Error (XTE) calculations and display
Support for latest FLIR Infra-Red cameras for AR mode
5.5 Jan 20
Ruler line UI improvement for iOS26
Battery indicator
5.4.20 09/24/2025
Improved ruler UI :- endpoints now easier to select & drag and magnifier view added to show what's under your finger for more exact placement.
Improvements to offline handling.
5.4.19 07/16/2025
Marine Charts for the whole of Italy (IT) and Sweden (SE) added.
Swedish and Italian language support added.
Chart update improvement
5.4.18 04/24/2025
Improvements for working offline (no internet).
AIS, GPS & NMEA Link (local AIS) now supports newer versions of the AIS standard.
5.4.17 03/20/2025
Man overboard (MOB) and Anchor Watch features added (IAP).
-Anchor Watch alerts if drifted more than the anchor length or dirfts at more than 1 Knot
-MOB and Anchor buttons on the mainscreen top left (can be turned off in settings)
-MOB distance, bearing and time in water displayed
-MOB takes priority over Anchor Watch
-Anchor Watch also provides an email alert with a map
-SeaNav remains in sailing mode when MOB or Anchor are cleared.
- Check the userguide for more information about using Anchor Watch and Man Overboard
5.4.15 03/04/2025
Tidal Currents for the whole of the US and Alaska added. Over 20,000 US tidal stream locations. Look for the red and blue diamonds ( red flood tide, blue ebb tide). Current US chart subscription required. Nearby Tide levels for the whole of the US also available via a long press anywhere on the US charts.
5.4.14 02/10/2025
Update for ios18.2
Bermuda and British Virgin Island charts added
Raster charts for Finland, Estonia and New Zealand re-instated
5.4.13 12/19/2024
Chart measurement units now have option for Kts,mph,kmh,meters and feet (Advanced settings)
UI improvements
Updates for iOS18.1
5.4.12 12/09/2024
Australian Marine charts now available including demo with charts and demo route sailing on the Sunshine Coast.
5.4.11 10/22/2024
French Tides and Tidal Streams now available
UI Improvements and fixes
Previous version:-
-Quick Link to Boat Beacon button added (top right) - Boat Beacon also has a quick link back to SeaNav
-Request to launch Boat Beacon on start sailing now defaulted to not show( re-enable in Advanced settings or just use the new Boat Beacon quick link button).
-iPhone landscape mode now displays current time again
-iPad instruments side panel in landscape displays time
-SART TEST targets no longer fire an alarm
-Weather map now scrolls up and down
-French . German & Spanish language support added
5.4.10 10/08/2024
UI Improvements and fixes
-Quick Link to Boat Beacon button added (top right) - Boat Beacon also has a quick link back to SeaNav
-Request to launch Boat Beacon on start sailing now defaulted to not show( re-enable in Advanced settings or just use the new Boat Beacon quick link button).
-iPhone landscape mode now displays current time again
-iPad instruments side panel in landscape displays time
-SART TEST targets no longer fire an alarm
-Weather map now scrolls up and down
-French . German & Spanish language support added
5.4.9 06/12/2024
Added Watch complication for SeaNav so you can launch SeaNav from the clock face.
Fix for instruments crashing when dismissed on iPhone
5.4.8 05/30/2024
Fix for viewing routes on older iPads on pre iOS16.
5.4.7 05/16/2024
Fixes and Updates for latest iPad iOS support.
5.4.6 03/28/2024
Charts for the whole of France and Portugal now available
Fix for start up problems on iOS 17 when trying to load the charts.
5.4.5 10/19/2023
Charts for the whole of France and Portugal now available
Fix for updatable charts that have not been updated not displaying if SeaNav is not connected to the internet.
5.4.4 08/15/2023
DE,DK and NL demo routes and charts added
Multilignual support for UserGuide and FAQ
My Boat Details type can now be set - e.g. Sailing, Fishing, Pleasure, Diving etc.
Easier to see My Boat icon with boat type colour
Bridges, Shoreline and Traffic zones UI improvements
Fix for S.Cardinal light patterns
User guide and FAQ can now be read when offline too
Fix for route traversing international dateline
5.4.3 04/26/2023
Trial charts and routes added for Denmark, Germany and the Netherlands.
User guide and FAQ now available in multiple languages.
My Boat Details now lets you set the type - e.g. Sail, Pleasure, Fishing.
Own boat icon now bigger so more easily viewed and colour shows boat type.
Bridges, Shoreline and Traffic zones UI improvements
Flashing light patterns updated for South Cardinals
5.4.2 03/15/2023
stability improvements
5.4.1 07/05/2022
Apple Watch App greatly improved Nav, Waypoint, Map ,CPA Alerts & new real time wind display
Realtime local wind instrument using SeaNav's Weather feed (IAP) or NMEA over Wifi
Improved Instruments for Nav (inc. Depth), Waypoints & Wind
Export tracks and routes as GPX (e.g to MFDs, Chart plotters and Navionics)
Export and import all POIs
Settings for Auto/Day/Night mode display
iOS15 ready
5.4 04/06/2022
Minor improvements and fixes
5.3.5 08/17/2021
Update for US NOAA paper charts and iPad map/satellite mode switching
more Version 5.5.3 Apr 14
Data Not Collected The developer does not collect any data from this app.
