The lazy dog days of summer along the waterfronts of late 19th century New York could could also be dangerous, thanks in part to a strange old tradition called "launching day."

Boys at Rutgers Slip in 1908

On either August 1 or the first Friday in August (sources differ on exactly when it was held and how long it lasted), boys (and some men) along the city's rivers would pick up another boy or man and launch them into the water.

"Yesterday was what the boys along the water front call 'Launching Day,'" wrote the New York World on August 3, 1897. "They throw each other into the river, clothes and all, saying, 'Now swim and give yourself a bath.'"

"Splinter Beach" by George Bellows, 1916

The origins of launching day aren't clear, but one Brooklyn newspaper stated in 1902 that it "has been a summer event ever since Robert Fulton launched the first steamboat into the Hudson in 1807."

Launching Day was apparently held in Brooklyn as well. "Tomorrow will also be a fine day for the little boys along the river front who will observe 'Launching Day,'" reported the Brooklyn Daily Eagle on July 31, 1897, a Saturday. "This juvenile holiday will, in all probability, last for three days, as some little boys do not like to be thrown overboard in their Sunday togs."

Boys on a Brooklyn pier

It all sounds pretty innocent. On hot summer days boys all over the city without access to swimming pools or beaches cooled off by wading into the East and Hudson Rivers. Near South Street they dove off the docks at Market and Dover Streets; in Yorkville and East Harlem they swam into the water near treacherous Hell Gate.

The problem with Launching Day, though, was that many people didn't know how to swim in the 19th century city. Inevitably, newspapers carried tragic stories the next day about people who ended up in the water and never resurfaced.

1911 New York Evening World headline

"August 1 has been known about the waterfront for many years as 'Launching Day,'" wrote the New-York Herald on August 2, 1900. "Anybody who ventures on a pier is in danger of being thrown into the water....John Kriete, 21 years old, an iceman of 312 East 84th Street, pushed a workman, George Krause, of the same address, overboard at East 100th Street yesterday and fell in afterward himself. Kriete was drowned."

"In Brooklyn the drowned body of Thomas McGullen, the 10-year-old son of John McGullen of No. 70 Hicks Street, was taken from the water at Henry Street," wrote the New-York Tribune on August 2, 1903. "He was pushed off the pier by his playmates, who were celebrating 'launching.' They thought he could swim."

The action along an East River dock

Exactly when launching day died out I'm not sure. But by the 1930s, newspapers interviewed people who recalled the tradition.

In the Daily News in 1934, a police reporter wrote: "I've known how to swim for 30 years because I was one of the West Side kids who used the Hudson River. We don't have it now but then we had an annual 'Launching Day'....Everybody near the water got thrown in, clothes and all. You had to swim or else."

[Top photo: George Bain Collection/LOC; second image: George Bellows; Third photo: New-York Historical Society; Fourth image: New York Evening World; Fifth image: NYPL]