Between this latter date and November 11, sailing was thought uncertain, and from November 11 through March 10, the sea was considered closed to general navigation.
وقد علم البحارة الرومانيون ان الإبحار يكون عموما آمنا من ٢٧ ايار (‏ مايو )‏ الى ١٤ ايلول (‏ سبتمبر )‏ .‏