STERN DUCT, STERN ATTACHMENT, METHOD OF DESIGNING STERN DUCT, AND SHIP EQUIPPED WITH STERN DUCT

摘要

The present invention relates to a ship front duct (10) attached to the front of a propeller (3) attached to a stern (2) of a ship (1) And the radius Rr of the rear end circular portion 11r formed at the rear end of the duct body 11 is set to 50% or less and 20% or more of the radius of the propeller 3, The duct body 11 is inclined so that the duct centerline Yd of the duct body 11 is inclined in the rotational direction of the propeller 3 with respect to the vertical center line Xv of the propeller 3, Which is capable of improving the efficiency of the hull without increasing the resistance of the hull 1 even if the duct body 11 is attached to the hull 1 by the support means 12 attached to the stern 2, , A ship cosmetic additive, a method of designing a ship cosmetic duct, and a ship equipped with a ship cosmetic duct.