Treatise on Stay-Sails, for the Purpose of Intercepting Wind Between the Square-Sails of Ships and Other Square-Rigged Vessels, Mathematically Demonstrating the Superiority of the Improved Patent Stay-Sails

Treatise on Stay-Sails, for the Purpose of Intercepting Wind Between the Square-Sails of Ships and Other Square-Rigged Vessels, Mathematically Demonstrating the Superiority of the Improved Patent Stay-Sails