After the first sea battle, Gates and Defresne are discussing the net profits that could be expected. Defresne said after injury payments it would be $8 per man. Pirates did actually have a generous disability insurance package. A pirate would get 100 pcs of eight for the loss of an eye or finger, 400 for a left leg, 500 for a left arm or right leg, 600 for a right arm. 1 pcs of eight is worth approximately 0.96 usd in today's money.
In reality Anne Bonny was Irish but is portrayed by English actress Claire Paget who speaks with a cockney accent.
During the scene where Silver snoops through Flint's cabin, one of the books seen in his library is De Jure Belli Ac Pais, by Hugo Grotius. The two on the desk are the Republic by Plato and Leviathan by Thomas Hobbes.
The episode won 2 Emmy Awards for Outstanding Sound Editing for a Series and Outstanding Special Visual Effects.
The painting that Billy examines in Richard Guthrie's home on Harbour Island is Judith with the Head of Holofernes, painted by Cristofano Allori in 1613.