The taskforce has taken a sudden turn North East, which ironically placed it in a direct intercept course with it's impeding doom.... well.... hopefully 12-14 ships if everything goes to plan.
I tried to catch all of them in a screenshot, but that appears to be harder than one would think...
Will have to leave the engagement until after work. My plan is to use the same tactics that I've been using to bring down convoys of this size; get in right in the middle of all of them after waiting out the escorts at depth, then use one torpedo per ship aiming for the engine and the prop disabling it (if it doesn't sink in one hit). Reload and repeat, while hiding under one of the merchants from the escorts, using the above ship's engine to mask my own, and as a 'shield' that stops the destroyers getting above me.
Once I'm out of torpedoes, and have ships disabled in the water, it is merely a matter of time as I either dive and sneak out of visual range, where I can surface, recharge my batteries, reload the two torpedoes from the deck, and wait until nightfall when I can get in cannon range to pick off the crippled ships. The two torpedoes now reloaded from the deck are saved for whichever escorts have decided to stick around for protection.