At the beginning, Eleanor Guthrie's dress is folded left-over-right when she is standing. It changes to right-over-left when she sits on the chair, to left-over-right when she stands up and to right-over-left again when she sits down on the bed.
When Jack and Vane first come up to the rocks, Jack says, "Please. There is nothing in there but opium addicts, lunatics, and men who thought themselves too good to wear a condom." Condoms were not invented until 1855, yet the series takes place in 1715.
In the Guthrie Warehouse, barrels reading "Guthrie Sugar & Mercantile, Dunmore Town, Harbour Island" can be seen. However, this town was built at least 80 years after the events of the series, having been named after the governor of the Bahamas in 1787-1796.
In the final scene in the tavern where Elenor is deciding to stay, there is a song being played on the concertina. The song is the Skye Boat Song, about the escape of Bonnie Prince Charlie after the second Jacobite Rising in 1746...this series is set just after the first Jacobite rising in 1715 (the Scots on the island exiled due to their support of the Pretender, not yet the Bonnie Prince).