▁to ▁the ▁deck , ▁the ▁yard ▁becoming ▁a ▁ra ked ▁m ast ▁with ▁a ▁full - length , ▁tri angular ▁( leg - of - m utton ) ▁main s ail ▁a ft . ▁Int rodu ced ▁to ▁B erm uda ▁early ▁in ▁the ▁ 1 7 th ▁century , ▁this ▁developed ▁into ▁the ▁B erm uda ▁rig , ▁which , ▁in ▁the ▁ 2 0 th ▁century , ▁was ▁adopted ▁almost ▁univers ally ▁for ▁small ▁sail ing ▁vessels . ▁ ▁Com parison ▁to ▁square ▁rig ▁ ▁Square ▁rig ▁s ails ▁lie ▁across ▁the ▁boat ▁and ▁catch ▁a ▁following ▁wind ▁well ▁but ▁are ▁hard ▁to ▁set ▁so ▁that ▁they ▁can ▁get ▁drive ▁when ▁the ▁boat ▁is ▁heading ▁into ▁the ▁wind . ▁By ▁comparison ▁a ▁late en ▁or ▁other ▁fore ▁and ▁a ft ▁sail ▁lies ▁along ▁the ▁length ▁of ▁the ▁boat ▁and ▁can ▁be ▁better ▁controlled ▁to ▁enable ▁the ▁boat ▁to ▁sail ▁to ▁wind ward ▁and ▁is ▁far ▁more ▁man eu ver able , ▁tack ing ▁and ▁be ating ▁into ▁the ▁wind . ▁ ▁Although ▁a ▁late en ▁sail ▁is ▁more ▁difficult ▁to ▁tack ▁with ▁than ▁the ▁Mar con i - ▁or ▁g aff ▁rig s , ▁it ▁sail ▁has ▁a ▁better ▁aspect ▁ratio ▁than ▁the ▁square ▁rig . ▁ ▁However , ▁like ▁most ▁fore ▁and ▁a ft ▁s ails ▁the ▁late en ▁runs ▁poor ly ▁with ▁a ▁following ▁wind . ▁Thus , ▁the ▁Sp ani ards ▁often ▁re - rig ged ▁their ▁vessels ▁when ▁they ▁vent ured ▁out ▁of ▁the ▁Mediter rane an