A locomotive floated across New York Harbor yesterday on the way to its new home in Riverside Park South. The sixty year old engine is a model S1 switcher “which sorted out cars and assembled whole trains at all hours and in all weather.” It was manufactured by the American Locomotive Company in 1946 for the Erie Railroad and in 1967 came to work in the Brooklyn harbor yard. To become park-ready the locomotive was stripped of multiple layers of lead paint and given the distinctive black and yellow colors of the New York Central Railroad. It was donated by the Cross Harbor Railroad for $30,000, the engine’s scrap metal cost. Becoming the centerpiece of a new park and a symbol for rail era is a worthy retirement for a hard-working locomotive.