#ground_tackle__anchor  a mechanical device that prevents a vessel from moving
  supertype:  hook.mechanical_device__claw  a mechanical device that is curved or bent to suspend or hold or pull something
  part:  fluke.projection  shank.cylinder
  part of:  vessel.craft
  subtype:  grapnel_anchor__grapnelanchor__grapnel  a light anchor for small boats
  subtype:  mooring_anchor__mooringanchor  an anchor used to hold a mooring buoy or a channel marker in place
  subtype:  mushroom_anchor  an anchor used for semipermanent moorings; has a bowl-shaped head that will dig in however it falls
  subtype:  sheet_anchor__sheetanchor__waist_anchor__waistanchor  spare anchor for use in emergency

No statement uses or specializes ground_tackle; click here to add one.