1. DiD (see sig)
2. I never travel above "ahead slow" unless im trying to intercept a contact. Since i do primarly long range patrols, Fuel is too precious to waste.
3. When leaving bay of biscay, and while around the operating area, i am submerged by day, and only surface between 0:00 and 0100 local time and submerge at 0500 to 0600 local time. (at 1/4 battery, and 50% O2, i have to surface

)
4. Snorkel to recharge batteries or to ventilate the boat, and never above "ahead slow" see pt 2 and 3.
5. Two fish per target, excepting coastals or other small mechants which only require 1 torpedo. If the target requires more then 2 torpedo's and is unprotected, the deckgun shall be employed.
6. Torpedo expenditure priority (or, which ones i like to get rid of first)
aft external -> Fore external -> Aft internal -> Forward Internal.
Bow tubes are only used first if there is more then 1 target.
7. Man flak guns only when aircraft is detected at short range and am unable to dive in time.
8. I do not operate in shallow water.
9. Occasional hydrophone checks, Soundman doesnt report everything thats audible.