/**
* Factor to convert from chains to meters.
**********************************************************************/
static inline Math::real chain() throw() { return 22 * yard(); }
/**
* Factor to convert from fathoms to meters.
**********************************************************************/
static inline Math::real fathom() throw() { return 2 * yard(); }
/**
* @return the number of meters in a chain.
**********************************************************************/
static Math::real chain() { return 22 * yard(); }
/**
* @return the number of meters in a fathom.
**********************************************************************/
static Math::real fathom() { return 2 * yard(); }
/**
* Factor to convert from chains to meters.
**********************************************************************/
static inline double chain() throw() { return 22 * yard(); }
/**
* Factor to convert from fathoms to meters.
**********************************************************************/
static inline double fathom() throw() { return 2 * yard(); }
