I reference this site and pages to get 'general ideas' on the length of a patrol depending on the boat, the orders, etc. etc.
http://www.uboat.net/ops/top_patrols.htm
Fuel usually dictates the time to head back to base ... but sometimes I limit the patrol to food rations especially when not burning fuel excessively.
Obviously damage and re-arming makes a decision.
Question to all? What means do you use to limit the patrol time?
S'
PC
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DID, no cheats, no shortcuts, no non-historic equipment deviations. Boat and crew safety is integral with my immersion style! Follow the historic events during your patrol:
http://www.uboat.net/today.html