This notice rescinds notice to Shipping no. 27. Mariners are advised that due to a decrease in water levels the speed limits outlined in Column III of Schedule II – Table of Speeds in the Seaway Handbook Practices & Procedures will now be applied from Iroquois Lock to Tibbetts Point. Mariners are reminded to watch their wake, particularly when navigating close to shore. Please note that the speed restrictions outlined in Montreal – Lake Ontario Notices to Shipping No. 22 and No. 23 regarding the high spots at Galop Island and in U.S. Sector IV remain in effect.