NORTH SUNDERLAND.— On the 24th August the Life-boat Joseph Anstice was launched to the assistance of the fishing vessel Gem, of Eyemouth, which had got ashore near that port during a strong breeze and heavy sea. The Life-boat, by timely assistance which an ordinary boat could not have rendered, was the means of saving the boat, which did not sustain serious damage. The Gem carried a crew of 6 men..