Anti Shipping V-1 derivatives or perhaps “Zitteroschen” supersonic anti-shipping missiles plus V-2s?
So they'd just fire the V-1s etc. in the general direction of the enemy? And hope for the best?

OK, I guess, if your enemy is in port and not moving.
Guided surface-to-surface against moving targets was just a dream in the period and nobody,
not even der Übermenschen, was even close to a solution.