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
Fathom Castle Fathom Castle Fathom Castle, also known as Feedom Castle, was a castle in Fathom (sometimes 'Fidun') County Armagh near Newry, County Down, Northern Ireland. A stronghold of the O'Neill's, the castle was taken by the English during the Nine Years War and was then demolished in 1730 for the development of a canal. Originally it was a holding of Hugh DeLacy, as there is reference to an 'old castle' being there, before Shane O'Neill built his structure c. 1550's and used it as a primary residence. Being on the western approach to the settlement at Carlingford, where King John's Castle