Salvaging Ships Sunk by Submarines 



PUMP SUCT 

 ! 



AIR COMPRESSOR <4-FLEXIBLE^ AIR-TUBE 



Raising a Hull by Pumping a Buoyant Mixture Into It 



SalvaKC ships on the surface and section of sunken 

 ship of usual carvjo-carryinK type below. Connection 

 is made, extendinK throuRli all three hatchways of 

 the ship to its hold, by a flexible tube secured within 

 another tlexiljle tube and continued within a metal 

 pipi- couph-d to the latter. The metal pipe is secured 

 to a temporary hatch-cover, with manhole for the up- 

 per hat< iiway. and carries a ladder and w<*kinR plat- 

 forms for divers. The entire construction is further 

 reinf(jrccd by brace rods wherever they are needed 



The inner flexible tube is connected with a centrif- 

 ugal pump in the salvage sliij). A derrick supports 

 the tubing. A suction pipe with a cut-off valve or 

 seacock leads from the centrifugal purap to tht»opeo 

 sea. It connects with a hopper that receive* the 

 buoyant material. The paratVm conies through a 

 pipe from the paraffin tank where it is kept liquidand 

 heated by a steam coil connected with the ship's 

 boiler An air pump is connected by a pipe to a 

 i-pace between the outer and the inner flexible tubing 



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