A floating production, storage and offloading vessel, the floating production, storage and offloading vessel comprising: a. a hull (9a, 9b, 9c, 9d) with a hull planform that is circular, oval, elliptical, or polygonal, wherein the hull comprises: (i) a bottom surface; (ii) a top deck surface; and (iii) at least two connected sections engaging between the bottom surface and the top deck surface, the at least two connected sections joined in series and symmetric configured about a vertical axis with the at least two connected sections extending downwardly from the top deck surface toward the bottom surface, the at least two connected sections comprising a lower conical section and at least one of: 1. an upper cylindrical portion; and 2. a cylindrical neck section; wherein the floating production, storage and offloading vessel is shaped and arranged in a manner to control pitch, roll and heave in absence of a retractable center column; b. a plurality of catenary production risers (90a, 90c) and/or at least one anchor line; c. at least one radial fin having a shape of a right triangle in a vertical cross section such that a bottom edge of the right triangle is coplanar with the bottom surface of the hull (9a, 9b, 9c, 9d), wherein the at least one radial fin comprises a distal end towards a vertex formed by the bottom edge and a hypotenuse of the right triangle; and an end opposed to the distal end, the end being towards a vertex formed by the hypotenuse and an opposite side of the right triangle, and the at least one radial fin is discontinuously secured around the hull (9a, 9b, 9c, 9d); d. a gap arranged separating the at least one fin such that a portion of the distal end of the at least one fin is discontinued, characterized by another gap formed between a portion of the end opposed to the distal end and at least part of the hull (9a, 9b, 9c, 9d), wherein the at least part of the hull (9a, 9b, 9c, 9d) and the opposite side of the right triangle are arranged facing each other; wherein the another gap accommodates at least one of the plurality of catenary production risers (90a, 90c) and/or the at least one anchor line, e. wherein the lower conical section provides added mass improved hydrodynamic performance through linear and quadratic damping to the hull. a. a hull (9a, 9b, 9c, 9d) with a hull planform that is circular, oval, elliptical, or polygonal, wherein the hull comprises: (i) a bottom surface; (ii) a top deck surface; and (iii) at least two connected sections engaging between the bottom surface and the top deck surface, the at least two connected sections joined in series and symmetric configured about a vertical axis with the at least two connected sections extending downwardly from the top deck surface toward the bottom surface, the at least two connected sections comprising a lower conical section and at least one of: 1. an upper cylindrical portion; and 2. a cylindrical neck section; wherein the floating production, storage and offloading vessel is shaped and arranged in a manner to control pitch, roll and heave in absence of a retractable center column; (i) a bottom surface; (ii) a top deck surface; and (iii) at least two connected sections engaging between the bottom surface and the top deck surface, the at least two connected sections joined in series and symmetric configured about a vertical axis with the at least two connected sections extending downwardly from the top deck surface toward the bottom surface, the at least two connected sections comprising a lower conical section and at least one of: 1. an upper cylindrical portion; and 2. a cylindrical neck section; wherein the floating production, storage and offloading vessel is shaped and arranged in a manner to control pitch, roll and heave in absence of a retractable center column; 1. an upper cylindrical portion; and 2. a cylindrical neck section; b. a plurality of catenary production risers (90a, 90c) and/or at least one anchor line; c. at least one radial fin having a shape of a right triangle in a vertical cross section such that a bottom edge of the right triangle is coplanar with the bottom surface of the hull (9a, 9b, 9c, 9d), wherein the at least one radial fin comprises a distal end towards a vertex formed by the bottom edge and a hypotenuse of the right triangle; and an end opposed to the distal end, the end being towards a vertex formed by the hypotenuse and an opposite side of the right triangle, and the at least one radial fin is discontinuously secured around the hull (9a, 9b, 9c, 9d); d. a gap arranged separating the at least one fin such that a portion of the distal end of the at least one fin is discontinued, characterized by another gap formed between a portion of the end opposed to the distal end and at least part of the hull (9a, 9b, 9c, 9d), wherein the at least part of the hull (9a, 9b, 9c, 9d) and the opposite side of the right triangle are arranged facing each other; wherein the another gap accommodates at least one of the plurality of catenary production risers (90a, 90c) and/or the at least one anchor line, wherein the another gap accommodates at least one of the plurality of catenary production risers (90a, 90c) and/or the at least one anchor line, e. wherein the lower conical section provides added mass improved hydrodynamic performance through linear and quadratic damping to the hull.