USS Walke (DD-723), an Allen M. Sumner-class destroyer, appeared in the background of several scenes. For more info on this ship, see here. Submitted by billp, 1/17/2009.

I may be wrong, but the Aloha bar looks a lot like the beatnik bar that appeared in episode #57, “TCOT Jaded Joker.” The booth where Perry and Paul sit by the stairs seems to be the same place they sat in that episode. Submitted by PaulDrake 33, 5/20/2009.

It’s interesting how both Paul Drake and Robert Chapman both pronounce Delores’ name as duh-LOR-ees (rhymes with “geese”), when usually it’s duh-LOR-ess (rhymes with “chess”)—or at least it is on the East Coast! Submitted by gracep, 10/6/2010.
+ And Della pronounces San Pedro “San Pee-dro“ rather than the correct “Pay-dro“ (“dinero“ is “din-ay-roh“ not “Din-eee-roh.“) Submitted by CGraul, 8 Sept 2011.
+ However, most current residents of San Pedro do in fact pronounce it "Pee-dro." Just why, I don't know, but it's true. Submitted by Ed Zoerner, 3/13/12.
+At 28:15, I hear Della say "San Pay-dro". Submitted by 10yearoldfan, 22 Sept 2012.

I wonder why the titles of other naval men were included in the credits, but Chief Scott was just “Barry Scott.” Submitted by gracep, 10/7/2010.

Here are several more comments on the Naval setting. We see in the background a small nest of destroyers alongside USS Frontier (AD-25), a destroyer tender of the Klondike class. While two officers chat topside aboard "Moray", one of them leans against a lifeline. That's an absolute no-no. Every Navy member learns that precaution early in initial training. That's one of the basic principles deeply ingrained and steadfastly followed and enforced. The CO, the skipper, wears not only his gold dolphins, the coveted insignia of a qualified submariner, above his ribbons, but also his war-patrol insignia, below his ribbons, indicating that he had taken part in one or more submarine patrols during WW2. All the belowdecks scenes were shot on a set, not aboard a submarine. One humorous touch is that the frames (the "ribs") of the set use riveted construction rather than welding. The set is not as crowded or constricted as a submarine. Each of the submarines seen in this episode is still in the WW2 configuration, called a fleet submarine -- that is, none of them had become converted into the streamlined Guppy configuration. The view of a submerged boat shows a model, not a real boat. [A submarine is the only type of Naval ship correctly called a boat rather than a ship.] Chief Scott was a chief petty officer; more particularly, he was a master chief torpedoman's mate, abbreviated as TMCM. Since he was a qualified submariner, entitled to wear silver dolphins (gold for officers, silver for enlisted men), his rate and rating are written as TMCM(SS), where the letters SS indicate his qualification for submarines. The torpedo in his insignia on the left sleeve of his dress blues identifies him as a torpedoman's mate. The two stars above the eagle (commonly called the "crow") on his left sleeve indicate that he was a master chief petty officer (in the pay grade of E-9). [One star indicates a senior chief petty officer (E-8), and no star indicates a chief petty officer (E-7).] However, it was impossible for Chief Scott or anyone else to be a master chief at the time of shooting. The two grades of SCPO and MCPO came into existence on 01 June 1958. Any candidate seeking advancement to E-9 must have served at least three years as an E-8, and any candidate seeking advancement to E-8 must have served at least three years as an E-7. Even if Chief Scott (or any other E-7) had been immediately advanced to E-8, he could not have satisfied the three-year requirement (and could not have been advanced to E-9) until at least 01 June 1961. Please note that this episode first aired on 14 May 1960. I contribute these comments as a former Naval officer, as one who has served aboard submarines, as one who has taught at the Naval Submarine School, and as one who wore gold dolphins (and sometimes still wears them). Submitted by Doc Rushing on 27 August 2012.