It captured the imagination of the public, which followed the final days of "the ghostship" in media reports and tracked its progress on Canadian and U.S. Coast Guard websites.
The SNP's proposed Referendum Bill - which will not be presented to Holyrood this term - was like a "ghost ship" flitting in and out of view, according to the Labour MSP.
Typically, Pirate games are fairly well-grounded: they are almost universally set in the Caribbean during the Age of Sail, and they try to maintain a certain amount of realism (except for the occasional skeleton, zombie or a ghostship).