Spytail Black Ginger Rum is produced by Biggar and Leith, who are based in the New York area with distribution across North America and in 16 Countries worldwide (and growing). Biggar & Leith own a small portfolio of spirits which are produced by established, family owned distilleries.
Spytail Black Ginger Rum pays homage to the submarine, SPYTAIL, as apparently plans for the legendary underwater ship were discovered by Biggar and Leith’s distillers in Cognac, France. While that may seem unlikely, this actually makes sense as the first mechanical submarines were not only invented in France, they were tested within the Charente River which flows near their distillery. The production of Spytail Rum is based on a 19th Century recipe which calls for the aging of fresh ginger root and spices in barrels of Rum. The spirit is produced from a blend of Caribbean rums which are both blended and bottled at the Cognac, France facility.
Here is a link to my full review:
Review: Spytail Black Ginger Rum
Please enjoy my review which concludes with a very nice cocktail, The Last Saskatchewan Pirate.
Chimo!
Bacardi Black is a traditional dark rum. As such it achieves a major portion of its flavour, aroma, and colour from the special ingredients (caramel colour for sure) which are added to the final blend prior to bottling. The Black is apparently blended from rums which have been aged up to four years; but, it would be a mistake to believe that the maturation of the rums in the blend have anything but a small role in the rich dark colour we see or the strong collection of aromas that we sense above the glass.
A few weeks back, I contacted the distributor for Blackheart Spiced Rum with a view towards providing a review here on my website. It turned out Heaven Hill Distilleries, who own Blackheart Rum, also own 
Captain Morgan Rum
The Rum Howler Blog 