In fact I found mission 4 at Qingdao chinluk the most difficult ever! I killed USS Annapolis without much problem but USS Santa Fe is rediculously overpowered with fat fresh Mk 48 ADCAP torps from nowhere and slamming the entire convoy without a problem. I've eaten many of his torps like insane while mine are miserable couldn't even scratch his paint! Any idea how to sink this insane skipper cause I have an INSANE VENDETTA on him???