AUGUST 30TH. - SOUTHEND - ON - SEA, ESSEX. At 9.10 in the morning the naval control reported that an invasion barge was lying near the Blacktail Spit Buoy with her engine broken down and nothing to secure her. A fresh S.W. wind was blowing with a rough sea.   e motor life-boat J.B. Proudfoot was launched at 9.20 A.M. and found invasion barge L.C.V.P. 1058 half a mile N.E. of the buoy. With some difficulty she took her in tow, and towed her for seven miles until they were inside the defence boom. The life-boat then signalled a drifter, which towed them both to Southend, arriving at 1 P.M. - Property salvage case..