Desktop App · v1.4.18

Download CHIEFMATE

Put the complete maritime workstation on your computer, installed like any other program. Navigation, charts, stability, logbooks, publications and emergency procedures. Once installed, it works with no internet and no login.

This is your computer
Apple / Mac

Download for Mac

Mac with Apple silicon (M1 or newer) · macOS 11 or later
Download for Mac
This is your computer
Windows PC

Download for Windows

Windows 10 or 11 · no administrator password needed
Download for Windows

Not sure which one? If your computer has an Apple logo on it, choose Mac. Otherwise choose Windows. To check a Mac, open the Apple menu and choose About This Mac. If the chip line reads Intel, the desktop app will not run on it, so run CHIEFMATE in your browser instead.  ·  All versions & release notes

How to install, step by step

Takes about two minutes. No computer experience needed.

On a Mac

  1. Click the Download for Mac button above and wait for the download to finish (about 100 MB).
  2. Click the downloaded file (CHIEFMATE.dmg). It is in your Downloads folder, or click the arrow at the top-right of your browser to find it.
  3. A window opens showing the CHIEFMATE icon. Drag the CHIEFMATE icon onto the Applications folder in that same window.
  4. Open your Applications folder and double-click CHIEFMATE.
If your Mac asks "CHIEFMATE is an app downloaded from the Internet. Are you sure you want to open it?" Click Open. This is a routine question macOS asks about every downloaded app. The message also tells you Apple has already checked CHIEFMATE for malicious software.

On a Windows PC

  1. Click the Download for Windows button above and wait for the download to finish (about 80 MB).
  2. Click the downloaded file (CHIEFMATE-Setup.exe). It is in your Downloads folder, or click it at the top-right of your browser.
  3. The installer runs on its own and puts CHIEFMATE in your Start menu and on your desktop. No administrator password is needed.
The installer is signed by STEM Maritime Systems LLC, so Windows opens it normally. If Windows shows a blue confirmation screen, click "More info" and then "Run anyway."

On an iPad or Android tablet

iPad owners get the iOS app from the App Store above. On Android, CHIEFMATE installs straight from your browser as a full-screen app, no app store needed. Both use your regular subscription and need an internet connection (the desktop app above is the fully offline option).

  1. iPad or iPhone: tap the App Store badge above, install, and sign in.
  2. Android tablet: open the site in Chrome and sign in, then tap the button below, or choose Install app from the Chrome menu.

The first time you open it

  1. Have an internet connection for the first launch. CHIEFMATE downloads its chart and publication library (this can take a few minutes, like loading charts aboard before getting underway).
  2. After that, everything works completely offline: at anchor, offshore, or with the WiFi off.
Your data is safe across updates Your logbook, charts, vessel profile and settings are stored separately from the app and are kept when you update or reinstall. When a new version is available, the app offers it to you. Nothing installs without your say-so.
Need a hand? Email support@stemmaritimesystems.com and we will walk you through it.