od rom ic ▁track ▁of ▁the ▁vessel ▁must ▁be ▁at ▁least ▁ ▁in ▁length ." ▁The ▁analysis ▁suggests ▁that ▁Watson ' s ▁published ▁distance ▁logs ▁are ▁based ▁on ▁sa iled ▁distances , ▁including ▁tack s ▁and ▁strateg ic ▁weather ▁det ours , ▁rather ▁than ▁the ▁short est ▁orth od rom ic ▁track ▁between ▁islands ▁and ▁cap es ▁as ▁defined . ▁The ▁rule ▁is ▁based ▁on ▁the ▁older ▁rule , ▁followed ▁by ▁current ▁record - holder ▁J esse ▁Martin , ▁that ▁during ▁a ▁circ umn avigation ▁the ▁sail or ▁must ▁pass ▁two ▁points ▁on ▁opposite ▁sides ▁of ▁the ▁earth ▁( ant ip odes ). ▁For ▁example , ▁if ▁starting ▁in ▁southern ▁England , ▁a ▁place ▁near ▁the ▁start ▁will ▁be ▁opposite ▁to ▁the ▁track ▁near ▁New ▁Zealand . ▁It ▁was ▁replaced ▁by ▁the ▁rule ▁that ▁for ▁world ▁records ▁the ▁short est ▁orth od rom ic ▁track ▁must ▁be ▁at ▁least ▁as ▁long ▁as ▁the ▁circum ference ▁of ▁the ▁earth ▁( h ence ▁ 2 1 , 6 0 0 ▁na ut ical ▁miles ). ▁ ▁Watson ' s ▁response , ▁" If ▁I ▁haven ' t ▁been ▁sail ing ▁around ▁the ▁world , ▁then ▁it ▁be ats ▁me ▁what ▁I ' ve ▁been ▁doing ▁out ▁here ▁all ▁this ▁time ." ▁received ▁w ides p read ▁media ▁coverage . ▁And ▁by ▁following ▁on ▁with ▁"... it ' s ▁a ▁shame ▁that ▁my ▁voyage ▁won ' t ▁be ▁recognized ▁by ▁a ▁few ▁organizations ▁because ▁I ' m ▁under ▁ 1 8 ▁... " ▁Watson ▁successfully ▁created