Radar centre
Use my GPS position
Pick centre on map
Follow my GPS Search radius
10 nm 25 nm 50 nm 100 nm 150 nm 250 nm
Locate and measure
Drop pin at my location
Pin any point
Bearing between two points
Compass
Camera view (AR)
Tide, weather and sunlight
Map
Chart view
Full screen
Theme: Auto
Status
centre: — aircraft: —
vessels: — stations: —
Emergency log
Aircraft feed check
App
Install app
About
About Pelorus
pelorus /pɪˈlɔːrəs/ · puh-LOR-us
Pelorus is a live situational-awareness app for the UK coast. It shows what is around you, on the water, in the air and on the shore, and helps you take a bearing on any of it.
It tracks police, air ambulance and coastguard aircraft, lifeboats and rescue vessels, and RNLI stations on a map-first display. The map can be centred on your GPS position or any point you choose. Switch on its nautical chart view and you also get tide, weather and sunlight conditions for that position.
The compass and camera view takes its name from the instrument. Point your phone at the horizon and Pelorus overlays the bearing, distance and details of nearby sea marks, vessels, aircraft, pins and planned bearings in augmented reality. You can plan a bearing between two points, read positions in degrees and decimal minutes, and open any spot in what3words.
A pelorus is a marine navigation instrument used to take the relative bearing of landmarks, aids to navigation, vessels and other objects. Pelorus does the same job on your phone.
Pelorus uses unofficial public data (ADS-B, AIS, OpenStreetMap and a tide and weather model), so it is for awareness only and not for operational or safety use.
Terms, privacy and data credits
Install Pelorus on your phone
Install Pelorus to open it full screen from your home screen, like an app.
Android (Chrome) Install app in this menu. If you don't see it, tap the browser's ⋮ menu, then Install app or Add to Home screen .
iPhone and iPad (Safari) Share button (the square with an arrow).Add to Home Screen .Add , then open Pelorus from its new icon.
Computer (Chrome or Edge) Install .
Pelorus needs a secure (https) connection. Once installed it starts quickly and keeps working to open offline, but live aircraft, vessels, tides and map tiles still need a signal. The compass and camera ask for permission the first time you use them.