Suspense.  Episode 55, Cabin B-13.  Some Rat Fink named Rikki turns up missing on an ocean liner, along with the cabin that he was staying in.  (November 9, 1943)

The Adventures of Rocky Jordan.  Episode 19, Everything Shipshape.  Rocky comes into contact with a Mr. Ship of Ship and Shape Enterprises.  Mr. Ship wants to buy the Café Tambourine but first he has to deal with a woman who wants him dead.  (March 27, 1949)