CAISTER, NORFOLK.—A dense fog was experienced here on the 24th July, accompanied by rain, thunder and much lightning. At about 4 o'clock in the afternoon the fog cleared, and disclosed vessel just striking the inside of the Barber Sand. The Caister No. 2 Lifeboat Beauchamp was launched, sailed to the spot, and found the brigantine Navigator, of and for Lowestoft, coal ladtjn from Hartlepool, and having a crew of five men, hard on the sand and rolling heavily, the sea being very rough. The proffered services of the Life-boat men were accepted, and with their assistance the vessel was got afloat. Owing to the narrowness of the channel in which she was then lying it was necessary to bring her up until midnight, when the wind shifted and it then became practicable to sail her out round the north end of thesand through the Cockle Gatway into Yarmouth Boads. A tug was then engaged and the vessel was towed to Lowestoft, the Life-boat accompanying her..