1847
1847: 
 On 6 May 1847, CUBA (wooden schooner, 89 foot, 139 tons, built in 1844 at Peninsula, New York as a brig) was carrying wheat near Point Breeze, New York in Lake Ontario when she was run down and sunk in a collision with the steamer GENESEE CHIEF. No lives were lost.

1858
1858:   On 6 May 1858, the bark E.S. ADAMS began her voyage from Amherstburg, Ontario to London, England with a load of walnut timber. The transatlantic portion of the voyage took only 26 days and the vessel was back on the lakes in September 1858.

1903
1903:   EASTLAND was launched on 06 May 1903 at the Jenks Ship Building Company (Hull #25) at Port Huron, Michigan for the Michigan Steamship Company. She was christened by Mrs. Frances E. Perene.

1906
1906:   HARVEY D. GOULDER entered service on May 6, 1906.

1914
1914:    CITY OF ROME caught fire in Lake Erie and the blaze spread quickly. The vessel was run aground near Ripley, NY and the 15-member crew took to the lifeboats and rowed ashore. The 33-year old wooden freighter was a total loss.

1923
1923:   This day in 1923 the EDWIN E. SLICK was struck by the steamer J. LEONARD REPLOGLE in the ice on Whitefish Bay, Lake Superior.

1934
1934:   On May 6, 1934, ROYALTON (1) helped rescue the steamer TEN, which had lost power in a Lake Superior ice field and required a tow to safety.

1944
1944:    The HILDA (2) and the barge MAITLAND NO.1 started the rescue operation of freighter GEORGE M. HUMPHREY (1) which sank in a collision with the D.M. CLEMSON (2) in the Straits of Mackinac.

1975
1975:   On May 6, 1975 while unloading iron ore at Conneaut, Ohio, a leg and bucket from No.2 Hulett gave way and fell into the RALPH H. WATSON’s cargo hold. A crane was rigged to remove the wreckage. A nine by twelve-foot patch was required on her port side tank, which was holed in the accident.

1977
1977:    The West German freighter SUSANNE FRITZEN made 19 trips through the Seaway from 1963 through 1967. The vessel arrived at Jeddah, Saudi Arabia, with engine trouble as c) MARGRIT B. on this date in 1977. It remained idle and had to be towed to Piraeus, Greece, and laid up in 1978. The ship left there February 15, 1979, for the scrapyard in Barcelona, Spain.

1984
1984:   On May 6, 1984 the CANADIAN RANGER sailed from Port Weller on her maiden voyage to load coal at Toledo, Ohio.

1988
1988:   The Cypriot flag freighter PONTOKRATIS was under tow and downbound in the Little Calumet River at Chicago when the CSX railroad bascule bridge ended up across the stern cabin and pilothouse. There were no injuries and both sides launched a lawsuit. The vessel was released May 16 and continued to visit the Seaway as late as 2006. It renamed NAVIGATOR M. in 2010.

Data from Skip Gillham, Jody Aho, Joe Barr, Dave Swayze, Father Dowling Collection, Ahoy & Farewell II and the Great Lakes Ships We Remember series.