In 1963 California license plates changed from yellow to black. In courtroom transition scenes shown from time to time through the end of the series, Perry gets out of an early 60s black Ford and walks behind in toward the court. The plate on the back of his car is clearly yellow '62 XCF.
Perry loses the civil case in this episode due to chicanery on the part of the opposing party.
Perry: You know, I can still hear him in the courtroom, laughing at everyone. "Which one of you ain't posin' and playactin'?" You know, there's a lot of truth in that.
Drumm: Ah-ha. A lawyer's weakness. Empathizing with a criminal despite himself.
Clay: Gentlemen, being in a ship is being in jail with a chance of drowning. A man in jail has more room, better food, and commonly better company.
Drumm: Now who said that?
Clay: I said that.
Perry: Yes, but Samuel Johnson said it two hundred years before you did.
Clay: Great minds frequently trod the same path.
Raymond Burr plays a dual role in this episode--Perry Mason and sinister merchant seaman Grimes.