ALL OF THE GREAT LAKES AND CONNECTING WATERWAYS. CHARTS. DETAILED PORT INFORMATION. EVERY PORT ON EVERY LAKE. 1998 EDITION, SO CERTAINLY THERE ARE CHANGES, BUT STILL VERY SOLID INFORMATION AND DATA. HUNDREDS OF PAGES. WEIGHS A BIT OVER 3 POUNDS AND IS 11 X 8-1/2 X 1 INCHES.