SeaNav lets you explore, plan and navigate your boating trips in real time and outstanding high-resolution using Digital Vector Marine charts derived from the latest NOAA and UKHO data providing coverage across the US and Europe (USA, CA, UK & IE, Germany, France, Benelux, Denmark and Spain). Raster charts for FI and NZ.

- Vector charts - all buoys, lights etc. are tappable
- Seamless fast panning and zoom across charts
- Route Planning and real-time tracking
- North up and course up displays
- Offline charts
- Configurable layers
- Built-in tutorial mode with full features including charts and AIS
- Tides and Weather
- Live AIS Ship positions and collision alarm (optional IAP)
- Import and share routes and POIs via email and Dropbox
- Live Augmented Reality camera view (optional IAP) plus FLIRONE night vision support.
- Includes free Apple Watch app
- NMEA Depth, Wind Speed and Direction gauges
- Raster (RNC) charts for US (NOAA), FI and NZ (LINZ) (IAP)

The free version includes all our navigation and trip planning tools. High resolution vector charts are available by In App Purchase (IAP) with free chart updates for a 12 month period.

Vector charts provide many advantages over traditional raster charts. Buoys, Lights, Bridges, Depth Contours, Depth Soundings, Rocks, Anchorage areas, NOAA Weather Buoys etc. are all selectable and have real time distance, bearing and detail information. Turn off layers to de-clutter the display and only show what is important at the time. Tides, moon and sun times and weather are also all available at your fingertips.

In-app tools let you measure distances and bearings and record waypoints on routes to sail. When you are out at sea, the app’s Sailing HUD shows your position on the route, Course over ground (COG), Speed over ground (SOG), Vector Made Good (VMG), Estimated Time of Arrival (ETA), Distance and bearing to next Waypoint. Waypoint reached alerts, auto-routing to the next waypoint and flashing collision alerts (with AIS).

Unique AR view mode (IAP) allows you to view buoys, lights, ships, waypoints, route and track overlaid on your iPhone or iPad live camera view. With "AR LockOn" you can select a target on the chart and then be guided to it in the AR camera view. You can also see at night and in the fog with the FLIRONE Infra-red camera.

Free SeaNav Apple Watch app.

External NMEA GPS, AIS and Wind data over Wifi.

GPS only required for real time route navigation. Optional Real time AIS, Tides and Weather information require an active internet connection.

WiFi-only iPad or iPods will need an external GPS receiver for navigation.

Please note that continued use of GPS running in the background can dramatically decrease battery life.

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. Pricing for our 1 year US Charts update subscription is $19.99.

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.

Our Privacy Policy may be accessed via

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, [2012]. 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.

What's New

Version 4.8.1

Seamless New Zealand & Finland raster charts (RNC) now available ( via IAP).
Fix for SeaNav crashing when SeaNav Watch app is launched
Ship AIS Safety Messages now shown ( ship icon will flash if it is broadcasting a Type 14: Safety-Related Broadcast Message)
Collision detection Time to Collision and Distance collision guards can now be changed from the default of 200m in 10 minutes to any distance and time and can also be disabled by setting CPA Time to 0 - See Boat Details in SeaNav Settings..
POI Manage/Add new POI bug fix.
Fixes for using local AIS over Wifi for own boat location ( AIVDO message - speed and heading now correct)

Ratings and Reviews

3.2 out of 5
10 Ratings
10 Ratings

Excellent Nav App

Really good navigation app with detailed charts and clever augmented reality aspects. First class app with first class support from the dev…



Downloaded to my phone, not able to access it from my iPad despite sharing assurances. Not impressed.

Developer Response

SeaNav can be shared between upto 4 devices on the same account including iPhones and iPads. Can you please contact us at so we can get you set up.

chas adams


Best product I’ve ever had for my boats.


Pocket Mariner Ltd.
89 MB
Requires iOS 9.1 or later. Compatible with iPhone, iPad and iPod touch.
Age Rating
Rated 4+
This app may use your location even when it isn't open, which can decrease battery life.
© 2016 Pocket Mariner Ltd
In-App Purchases
  1. UK & IE Charts £19.99
  2. Pro Features £14.99
  3. French Charts £18.99


  • Family Sharing

    Up to six family members will be able to use this app with Family Sharing enabled.

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