NEWCASTLE, DUNDBUM BAY.—At 1 P.M. on the 13th February, the brigantine Trader, of Portaferry, was seen driving before a hard gale, at S.E., into Dundrum Bay. The Trader had lost her foretopmast and was otherwise disabled aloft, and had a signal of distress flying. The Life-boat Reigate was launched and proceeded out, under the direction of Captain C. GRAY JONES, E.N., Assistant-Inspector of Life-boats. The disabled vessel struck the ground off the entrance of the Castle River, and at the same moment the Lifeboat got within reach of her, and ultimately succeeded in embarking and landing in safety the whole crew of 4 men.