Hamilton Ministry of Rum Ministry of Rum Collection Navy Strength Rum 750 MLHamilton Navy Strength is a blend of the Jamaican and Demerara rums imported for the other rums in this portfolio. 60% Demerara and 40% Jamaican rum make this a favorite for tiki drinks but it has also found favor in daiquiris for its smooth character. 57% abv The rich ripe banana flavors of the Jamaican rum give the robust Demerara rum more character as a blend without adding too much heat.