CARNSORE—On the 19th December, the Life-boat Iris was launched to the assistance of the dandy Fairy, of Wexford, which vessel is employed as tender to the Tuskar lightship. Her mast had been carried away while wearing, during a fresh N.W. wind and rough sea, and she was lying at anchor close to the Tuskar Bock, with a large quantity of water in her. Her crew, consisting of 6 men, had taken refuge on the rock, and it was only with great difficulty that the Life-boat was enabled to take the men off and bring them safely to land..