 Skerryvore was Alan Stevenson 's greatest achievements from both an engineering and aesthetic perspective . No philistine , he chose a <unk> curve for the outline for stylistic reasons . His nephew Robert Louis described it as " the noblest of all extant deep @-@ sea lights " and according to the Northern Lighthouse Board it is " asserted by some that Skerryvore is the world 's most graceful lighthouse " . 
