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
Captain Fathom submarine called the Argonaut. He and his crew would have various adventures, similar to those of "Clutch Cargo" or "Jonny Quest". Captain Fathom Captain Fathom is an animated television series produced in 1965 by Cambria Studios. Like Cambria's other productions, "Clutch Cargo" and "Space Angel", it was produced in Synchro-Vox. At least thirty five 30-minute episodes, all in color, were filmed. The episodes could be broken down into five 5-minute segments in cliffhanger format. Renowned comic book artist Alex Toth was the director. This animated series was broadcast in Italy in syndication in the early '80s under 2 different titles: