Sailings

Great Circle and Rhumb line routes

Navigational Algorithms · com.Sailings

Not rated yet 100K+ downloads v1.21 2.9 MB Android 5.0+ PEGI 3 · Everyone

Download APK 2.9 MB All versions

At a glance

Latest version: v1.21 (22)
Updated: Apr 14, 2025 (1 year ago)
APK size: 2.9 MB
Requires: Android 5.0+ (API 21)
CPU support: Any (no native code)
Graphics: OpenGL ES 2.0+
Category: Maps & Navigation (app)
Listed since: Jul 11, 2021 (at least)
Permissions: 6 (2 sensitive)
Website: sites.google.com/site/navigationalalgorithms
Developer contact: [email protected]

About this APK

Sailings is an app by Navigational Algorithms in the Maps & Navigation category, listed since at least July 2021. It has no native code, so it runs on any Android processor.

It asks for 6 permissions, 2 of them sensitive: precise location and approximate location.

What's new in v1.21

Upgraded to: Android SDK 36 'com.google.android.gms:play-services-maps:19.1.0'

Description

From the listing uploaded by “appupdater”.

Sailing is a method of solving the various problems involving course, distance, difference of latitude, difference of longitude, and departure. The app plots on a Google map the route between a departure and a destination point, using the following sailings: - Rhumb line (loxodromic). - Great Circle (orthodromic). And calculates: - Course & distance. - Waypoints of the great circle route. - Save between Rhumb line and Great Circle route. - Nodes and vertices of the Great Circle. It also plots the entire Great Circle. OPERATION 1 - Long click 1: adds the departure point 2 - Long click 2: adds the destination point and plots RL & GC 3 - Tap the Mark to see the information 4- [Output] - GC course C and distance D - Save between RL & GC - Waypoints of the GC route - Vertices and nodes of the GC WARNING not for live navigation. Sailings App is a useful calculator for navigation. User interface: - Zoom buttons +/- - Map types: normal, terrain and satellite - GPS location. ("Location" App permission must be allowed. Switch on you GPS, and then automatic location detection is possible). See App help for more details.

Security & authenticity

Security rating: Trusted

Signing certificate

Certificate issued to “Navigational Algorithms” The developer's name — though anyone can put any name in a certificate.

Store checks and file details

Developer signature verified Apr 14, 2025
Signed byCN=Navigational Algorithms, OU=Navigational Algorithms, O=Navigational Algorithms, L=Donostia - San Sebastian, ST=Gipuzkoa, C=ES
Signing certificate (SHA-1)A5:59:A0:8C:4E:38:AB:94:4F:25:60:F7:37:4A:F8:DE:96:E0:2F:9F
File MD54383ca41b93695a5f2c5148e9d4097ef
Uploaded by “appupdater” Gold tier · 117,810 followers · uploading since 2020

Scans and ratings come from the source store; the certificate comparisons are AAPKs's own, made from the files' published signatures. AAPKs doesn't scan files itself — compare the MD5 and signer after downloading.

Permissions (6)

Sailings requests 6 permissions, 2 of them sensitive.

Approximate location Sensitive android.permission.ACCESS_COARSE_LOCATION
Precise location Sensitive android.permission.ACCESS_FINE_LOCATION
Full network access android.permission.INTERNET
Internal broadcast protection (app-defined) com.Sailings.DYNAMIC_RECEIVER_NOT_EXPORTED_PERMISSION
Read Google service settings com.google.android.providers.gsf.permission.READ_GSERVICES
View network connections android.permission.ACCESS_NETWORK_STATE

Required hardware & features

Basic touch input android.hardware.faketouch
Location android.hardware.location
GPS android.hardware.location.gps

Sailings APK: questions and answers

Can I install this APK over the version I already have?

Only if it is signed with the same certificate as the copy on your phone and isn't an older version. If Android says “App not installed”, the certificates differ; uninstalling your copy first works but deletes its data unless it is backed up.

Is the Sailings APK safe?

No one can promise that a file is safe, but some things can be checked. The source store rates this file Trusted. After downloading, check that the file's MD5 is 4383ca41b93695a5f2c5148e9d4097ef.