Harbourmaster (TV series)

Harbourmaster is an American adventure/drama series that ran on CBS from September 26, 1957, to December 26, 1957. On January 5, 1958, the series began running on ABC as "Adventure at Scott Island," and it ended on June 29, 1958. "Harbormaster" was a Ziv production.
Synopsis.
The series stars Barry Sullivan as captain of the ship "The Blue Chip II" and the owner of a business that repaired boats. Crime chaser David Scott. Paul Burke appeared in five episodes as Jeff Kittridge, Scott's partner in their boat-repair business. Other recurring roles were filled by Nina Wilcox as Anna Morrison, Michael Keens as Captain Dan, and Evan Elliott as Danny. The program is based in New England about fictional Scott Island near Rockport, Massachusetts.
"Harbormaster" first aired at 8 p.m. Eastern on CBS on Thursdays, opposite "Zorro" on ABC and Groucho Marx's "You Bet Your Life" on NBC. On January 5, 1958, the series switched to Sunday evenings on ABC with the episode "Pirate's Curse" guest starring Lonny Chapman.
R. J. Reynolds Tobacco Company sponsored both versions of the program. Reynolds apparently sought another sponsor to pay for alternate weeks of the CBS broadcasts but ended up as the sole sponsor.