The series was filmed at Cape Town Film Studios in Cape Town, South Africa, with local production company Film Afrika.[16][17]

The opening title sequence was made by Imaginary Forces and directors Michelle Dougherty and Karin Fong with the backing sea chantey-inspired theme composed by Battlestar Galactica and The Walking Dead composer Bear McCreary. It accurately features an instrument of the period in the form of the hurdy-gurdy.[18]

For the amount of detail that was added to the vessels, it took over 300 workers to build just one ship.[19]

In real life, recurring actor Nick Boraine is Louise Barnes's husband; Anna-Louise Plowman and Chris Larkin are, respectively, Toby Stephens's wife and brother; and Guy Paul is Harriet Walter's husband. Black Sails is an American historical adventure television series set on New Providence Island and written to be a prequel to Robert Louis Stevenson's 1883 novel Treasure Island.[1] The series was created by Jonathan E. Steinberg and Robert Levine for Starz. It debuted online for free on YouTube and other various streaming platform and video-on-demand services on January 18, 2014.[2] The debut on cable television followed a week later on January 25, 2014.[3] Steinberg is executive producer, alongside Michael Bay, Brad Fuller and Andrew Form, while Michael Angeli, Doris Egan, and Levine are co-executive producers. The show features treasure-seeking pirates fending off British government attempts to stop them.

https://en.wikipedia.org/wiki/Black_Sails_(TV_series)