NEWHAVEN, SUSSEX.—During a whole gale from south by west, accompanied by a very heavy sea, on the 12th February, a message was received from the Coastguard that a vessel was ashore at the entrance of the harbour, signalling for assistance. The crew were assembled, and the Life-boat Michael Henry was launched; she was taken in tow by a tug, and proceeding to the distressed vessel, found she was the brig Commerce, of Newhaven. Another tug was already trying to tow her off, but at the request of the master the Life-boat remained by him and rendered assistance; the vessel was ultimately towed off and taken into Newhaven..