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Knowledge · User question

My engine hours have suddenly jumped for no reason

iOS & Android

Recalculate your engine hours in one step after correcting the status — works on iOS and Android.

Created: 16/08/2026

Porträt von Florian Kriesche

Von ENTWICKLER DER LOGBUCH-APP

“My engine hours have suddenly shot up. It may be that the engine kept running in the app while I was at anchor. How can I change the times so that the following entries are correct again?”

Paul · Support request by email

Recalculating engine hours

Where do the wrong engine hours come from?

Engine hours are calculated from the status of your log entries: as long as an entry has the status “Motoring”, the app assumes the engine ran until the next entry. A single forgotten status change can therefore add a lot of hours in one go.

If, after motoring, you forgot to switch to a status without the engine, the app assumes the engine is still running. This is what the entries look like in that case:

  • Monday 14:37, status Motoring (engine hours 999.0 h)
  • Monday 15:37, status Motoring (engine hours 1,000.0 h) – the last entry of the day, after arriving in harbour or at anchor. The switch to Moored/At anchor was forgotten.
  • Wednesday 08:37 (engine hours 1,041.0 h) – whatever the status of this entry, the time since the previous entry (41 hours here) is counted. Even if this entry changes to Moored, according to the available data the engine ran from Monday afternoon until Wednesday morning and only stopped with this status change.

How do I correct the engine hours afterwards?

It’s very simple: first correct the wrong status. In the example above, the Monday 15:37 entry should have been set to Moored/At anchor. To find the entry in question, the engine time in the daily statistics helps you narrow down the day and then find the entry within it — usually it’s one of the last entries of the day. Once the status is correct, you can recalculate the engine hours in that same entry by tapping the hourglass next to the engine concerned. The engine hours of all following entries are then recalculated from this one — based on the status currently set.