Convert shackle (Britain 16th century) to light hour
Selected category: length.
Definition and details for shackle (Britain 16th century):
Shackle unit of length used for measuring lengths, especially anchor chains. During the 16th century in Britain, shackle was defined as 75 feet or 22.86 meters.
Definition and details for light hour:
Light hour is defined as the distance the light travels in one hour through a vacuum. The defined light speed is c = 299,792,458 m/sec. So one light hour equals exactly 1,079,252,848,800 meters.