In this paper it is analytically, and by numerical applications, affirmed the idea of using aerodynamic and self-shaping structures (flyers, sails and kites), solidary with the boat by flexible cross-ties, that in case of the wind in the stern, with a speed ∞ v higher than that of the boat, v0, can generate either partial or full traction [1]. Summary analytical relations are presented, suggesting performance parameters such as: the traction force Fx, after the longitude axis of the ship, Ox and the related power, Nx, of aerodynamic origin, the power saving ΔNengine and the related fuel ΔC, in relation to the internal burning engine of the ship, the output of the general power conversion η, the dimensionless proportionality sub-unitary parameters Cx and Caerodynamic, that introduce also the horizontal and x αˆ vertical z αˆ incidences of the wind in relation to the axis Ox of the ship [2, 3]. As well, a variable that is independent, dimensionless and higher than one has been defined, indicated as 0 v v∞ . The wind traction of the marine ships is of high interest energetically and economically, for important values of the wind force potential, together with the favorable wind [4]. There are though, construction and exploitation related issues as well as technical and economic and other aspects that should be optimally approached and solved.