The 1941 map shows the old PRR line between its Sea Isle City wye and the new P-RSL wye at 51st St., Ocean City. If you think the Reading's entrance to Ocean City is roundabout, the PRR's was via Woodbine Jct., South Seaville, Sea Isle Jct., Sea Isle City, Whale Beach, Corson's Inlet and 51st St. To avoid running through Millville, PRR express trains sometimes used the RDG between Winslow Jct. and Woodbine Jct.
The RDG line ran from Petersburg (near Palermo) through Seaville, Strathmere, and then a few feet bayside of the PRR through Whale Beach to a dead end at Sea Isle City. About 1924, when the Reading was abandoned between Seaville and Sea Isle City, a connection was built in S. I. C. so the PRR could serve the former RDG freight customers in town.
My cousin remembers that in the 1940s there was one train a week, with a steam engine, referred to by the locals as the "Fishermen's Special", but he can't remember the consist.