It was a remarkable achievement for its time without replenishment .
A remarkable achievement for its time is a naval group capable of sailing over 48,000 kilometers ( 26,000 nmi ; 30,000 mi ) in just 65 days .
It was a remarkable achievement for its time , a naval group capable of sailing over 48,000 kilometers ( 26,000 nmi ; 30,000 mi ) in just 65 days , without replenishment .