Hi Vecko
After my 6th patrol to ‘Infiltrate a spy near Liverpool’ I also sank 4 ships for33,776 tonnes and docked on February 29th 1940.
This bonus tonnage may have helped to trigger the upgrade?
VIIB U052 along with 2 x twin flak guns (awesome).
Patrol 7 March 22nd 1940 and added your update 03B according to my notes.
Requested NWA Objective to Patrol AM0286 but did OW instead as limited mission time to complete.
Peter
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