I was sinking a convoy in a rainy storm with my deck gun in the channel that separates England and Ireland. Everything was going fine then I collect some bills fees from my co-tenant and when I come back (15 seconds tops) it says on screen "Abandon Carrier"

I wasn't under attack 15 seconds ago so I am a bit concerned. Last thing I did before getting up was blowing up a small merchant ship in a big explosion about 300 to 400 meters out.
Is there a way to know what is the cause of your death ?
Thank you.