The complete planner and guide for travel and leisure on the River Thames (from its source to the Thames Barrier) and the River Wey including where you can go, how you get there and what’s on the way - includes these key features:

Thames Map and Guide:
•Interactive River Map: self-contained - no internet connection needed
•Journey Planner: time and distance between any two of 102 river points
•Locks: need to know detail on every lock
•Bridges: headway in metres and feet
•River draught (depth of water)
•Weather for selected locations
•Current river conditions (non-tidal and tidal)

Boating Advice:
•Rules for the River
•Preventing Problems
•Emergency Help and Guidance (RNLI approved)

INTERACTIVE RIVER MAP: pinch or squeeze to zoom to the required level of detail. Add any combination of locks, moorings, boatyards, fuel, marinas, pubs, restaurants, lodgings, sanitation, fishing, emergency RVP and/or bridges; tapping any icon pops up further details including phone number, post code, maximum stay etc (where available). The interactive map is built-in to the App so you do not need an Internet connection to see where you are and facilities near you (PLEASE NOTE: this means a large download - please be patient, it’s worth it!).

JOURNEY PLANNER: select a starting point and destination from the supplied list of 102 landmarks (including locks, marinas, moorings, bridges and places of interest (from Lechlade to the Thames Barrier) and immediately see the sailing distance, direction (up or downstream), sailing time (at 5 mph, 3 mph and 1 mph) and the number of locks to transit to complete your journey.

LOCK FEATURES: every Thames lock is listed in order from Cricklade Bridge to Teddington with distance to next lock both up and downstream. Touch any lock to see much more information including: telephone number; post code; lock type; width, drop and length; lock keeper’s hours; facilities available (such as WC, water, pump out etc). From the lock detail just tap to highlight this lock in the middle of the interactive map.

BRIDGE HEADWAY: every bridge listed in order with headway in feet and metres; bridge headways are colour coded for ease of use and instant check to see if you need to lower any masts.

All the above features are built-in so are available even without an Internet connection.

WEATHER: select one of 20 location on the river for an up-to-date weather forecast for today and tomorrow (includes temperature, winds, humidity, visibility, sunrise and sunset). Requires an Internet connection. The weather page includes the current nautical twilight (the correct time to strike your ensign).

CURRENT RIVER CONDITIONS: for safer river use always verify the current official conditions before setting off; non-tidal conditions are provided by the Environment Agency (the River Thames authority) and categorised as Red, Yellow or Green – tap to view an explanation of the colours. Tidal conditions are provided by the Port of London Authority. Requires an Internet connection.

IN CASE OF EMERGENCY: River Thames Guide includes an SOS section with information, endorsed by the RNLI, on how to deal with various problems including: Man Overboard; Boat Sinking; Boat on Fire; Boat Drifting. NOTE: these sections should be studied before embarking so that you can react properly to any emergency. Better still: take an appropriate course before using the river.

HELP: tips on using River Thames Guide to help plan your journey, find somewhere to eat or stay, using the map, and more.

What's New

Version 18.04

Update to underlying framework, giving:
more modern look-and-feel
smoother and quicker page transitions
better compatibility with different devices
top navigation bar no longer needed (more screen space!)

Removed the top navbar to use more screen for info
Context sensitive help button () moved to bottom toolbar

Made navigation more logical
'Home' takes you to the main (index) page
'Back' (when available) takes you to the previous page

Makeover for most popups
Easier to read, quicker to load, small-screen friendly

Fixed an issue where some Marina popups were partly off-screen
Popups now scroll so top is at top of screen

Fixed an issue where some popups did not scroll

Improved some map overlay icons

Changed tidal bridge clearances to that at MHWS (Mean High Water Spring)

Ratings and Reviews

The River THAMES App


Very good informative App would help if you could forward the App to friends from within the App via tweeter / e-mail. Also when viewing an area with a Apple iPad it would help to be able to zoom in and view the area without it reverting back to the large map when you take off your two fingers off the screen.
Very good App keep up the good work

Developer Response

Thanks - will look at adding the option to 'send to friends'

An invaluable boaters guide.


Excellent App for both novice and experienced boaters. Comprehensive information makes this App a "must have" on board! Having most of the information available without the need for internet connection is also a major plus.



A great, very handy app, I look forward to using it this summer. It would be handy to add a guide to public slipways and the tidal Thames too. Top app though, keep up the good work.


Jeff Maynard
779.8 MB
Requires iOS 9.1 or later. Compatible with iPhone, iPad and iPod touch.
Age Rating
Rated 4+
© Jeff Maynard, British Marine Federation


  • Family Sharing

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

More By This Developer

You May Also Like