Possibly a better diagnostic from the latest attempt:
- Set up on a Fuso's starboard beam from ~800m and 90 degrees from the course track. Opened four torpedo doors at 30m depth and set 2 torpedoes to 10m and 2 to 3m, all at high speed.
- Raised scope, acquired and locked target, selected Fuso from the book, activated the PK, dialled in the stadimeter (placed waterline of upper image just atop highest mast), took AOB of 61 degrees (protractor line from bow to center of target, then to center of sub), and requested speed.
- Reply was insufficient data, so repeated the distance and AOB readings (AOB was now 71 degrees) and received an estimate of 10 kts.
- Fired two torpedoes at 0 and the other two at 3 to the right.
- Popped up to view the attack: Fuso was at 90 degrees, one torpedo was not visible, and the other three were merrily bubbling their way 45 degrees behind the Fuso.
I did not hear any alarms until the wakes were spotted.
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