One group signals (Morse or Semaphore) to another group some distance away giving instructions such as: tie a bowline around your waist, tie clove hitch using two different thicknesses of rope, tie a reef knot around your leg, etc.
One group signals (Morse or Semaphore) to another group some distance away giving instructions such as: tie a bowline around your waist, tie clove hitch using two different thicknesses of rope, tie a reef knot around your leg, etc.