Fathom was upset and rose to the surface. A "shot", one of the forged lengths of chain joined by shackles to form an anchor cable, was usually 15 fathoms long (). A "shackle", a length of cable or chain equal to 12.5 fathoms or 75 feet. In 1949, the British navy redefined the shackle to be 15 fathoms. In Finland, fathom ("syli") is sometimes, albeit seldom, used as a maritime unit, of a nautical mile and of cable length. It is customary, when burying the dead, to bury the coffin at least to a depth of a fathom, or "six feet
Deep Fathom world theorizing that there was one major civilization which actually travelled and populated the other parts of the world. Soon Kirkland gets a call from his ship the Deep Fathom telling him they have a bomb aboard and when the phone terminates he believes that the bomb had exploded. Spangler, who had tapped into the call, is happy as Kirkland's ship and friends were now gone. Karen, Kirkland and Miyuki then go to the pyramid city with Mwahu to following the first civilizations clues but when they arrive they are attacked by Spangler's men. Karen is caught, but the others