Amazingly, IMDb has no record of the existence of this show.
Not if they were repeats... :-)
Sadly, they were NOT repeats when I saw them. Heck, another one just came to mind - - I believe there was a show called 'Waterfront' starring Preston Foster. He operated a tugboat, I think.... All these ocean-oriented shows obviously made quite an impression on my young mind.
I should have been a marine biologist. You know, like George Costanza.
Amazingly, IMDb has no record of the existence of this show.