Submarine Appliances And Their Uses
Deep Sea Diving, &c., &c.

DEEP SEA SOUNDING MACHINES. The advantages of this latest form of Lord Kelvin’s Sounding Machine, which is of an entirely new design throughout, and has been adopted by the British Admiralty, arc that soundings can be taken from the Navigating Bridge instead of from aft, and that the navi- gator is able to conveniently read the depth of each cast for himself, instead of bcin<>- depen- dent upon a message conveyed from aft. 0 1 Another advantage is that it becomes unnecessary to have a man in the chains heaving the lead. With the new machine it is possible to obtain Soundings much more rapidly than with the hand lead, irrespective of the speed of the ship. The machine is intended to be fixed on or under the bridge, and a travelling fair-lead pulley is mounted upon a spar rigged out from the side of the ship. (See Photos K, L, M). Photo K. Reep Sea Sounding Machine. Co-byright. The dial -showing the amount of wire run out is very much larger than formerly, and the divisions are consequently larger and more open. The dial is fixed ON TOP of the Machine, so thjit, if the machine is fixed below the bridge, the dial can be read conveniently from above. The dial indicates accurately the exact length of wire out, and the figures are bold and clear to facilitate reading. While the depth may be ascertained in the usual way by means of the Depth Recorder or the Chemical Tubes, it is intended that with the new Machine, the depth may be readily as- certained from the length of wire out. Tables arc prepared showing the depth indicated for 120