Tanker - The Sounding App
Sounding Tables In Your Pocket
About
This app streamlines the process of calculating marine fuel tank volumes. It eliminates the need for physical sounding tables and manual calculations, providing instant volume lookups with trim corrections automatically applied. Users can manage target fill levels, track fuel transfers, and share tables with their fleet.
What's New in Tanker
4.0.4
March 29, 2026
Bug Fixes - Ships and Tanks weren’t duplicating properly when making copies in Editor.
In-App Purchases
$4.99
Full Version
Unlocks the entire app.
Developer apps
FAQ
How does Tanker calculate fuel volumes?
Tanker uses your vessel's sounding tables, which can be imported via CSV or built within the app. Once a tank is selected and the sounding is entered, the app instantly provides the volume, automatically applying trim corrections.
Can I use Tanker without an internet connection?
Yes, Tanker is designed to work offline. All calculations are performed on your device, ensuring you can access its features even when at sea without internet access.
What are the subscription options for Tanker?
Tanker offers a Yearly Plan for $19.99/year and a Lifetime Plan for $59.99. Subscriptions automatically renew unless canceled at least 24 hours before the renewal date.
How does Tanker help maintain vessel stability?
You can set target fill levels for each tank based on your vessel's stability requirements. During bunkering, Tanker provides warnings when approaching these target levels, helping to keep the vessel balanced.
Can I share my sounding tables with other crew members?
Yes, you can share tables directly with crew members via AirDrop or publish them to TankerBase for your entire fleet to subscribe to. This allows for centralized table management.
What is the age rating for Tanker?
Tanker has an age rating of 4+, making it suitable for a wide range of users. The app is available on iPhone and iPad.
How often is Tanker updated?
The latest version of Tanker is 4.0.4, last updated on March 29, 2026. Updates typically include new features, performance improvements, and bug fixes.
Does Tanker have ads?
No, Tanker does not contain advertisements. The app is free to download and offers in-app purchases for its subscription plans.
