Before revision: Comparison between manual calculation methods and the use of calculators The traditional methods require bulky and expensive nautical tables (which must be updated), pencil and paper, and calculation time, following the working algorithms.
After revision: 495x495px|Hs..Corrections ..Comparison between manual calculation methods and the use of calculators The traditional methods require bulky and expensive nautical tables (which must be updated), pencil and paper, and calculation time, following the working algorithms.