"asakaze" and "yūnagi" departed takao on 21 august to rejoin the convoy at manila with the new tankers "hakko maru" no. 2 and "niyo maru" bound for singapore. "spadefish" hit "hakko maru" no. 2 with two torpedoes off cape bojeador lighthouse at 1455 on 22 august. the damaged tanker was beached in pasaleng bay while "yūnagi" stood by. "spadefish" fired four more torpedoes at the beached tanker until a depth charge attack by "yūnagi" chased away the submarine. "yūnagi" was relieved of responsibility for "hakko maru" no. 2 on 25 august and was sunk an hour later by "picuda". "hakko maru" no. 2 remained beached until destroyed by heavy surf on 18 september.