Epoch. Navy Strength Gin 700mlEpoch. Navy Strength Gin is not for the faint hearted! The term Navy Strength is a throwback to the 18th century where royal sailors would test the strength of their gin using gunpowder. Could this moment be considered an epoch in the history of gin? We suspect the true gin connoisseur would have a strong case. Epoch. Navy Strength Gin is thoughtful and diverse, embracing 20 botanicals for a unique, refined flavour. a herbal infusion, zesty citrus