Acronym  giship 
TOCID symbol  (7/3)P 
Name 
tristrophic heptagrammic prism, heptagrammic prism of winding number 3, great heptagrammic prism, great stellated heptagonal prism 
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Circumradius  sqrt[1+1/sin^{2}(3π/7)]/2 = 0.716257 
Vertex figure  [4^{2},7/3] 
Dihedral angles 

Confer 

External links 
As abstract polytop giship is isomorphic to hep, thereby replacing convex heptagrams with winding number 3 by heptagons. – It likewise is isomorphic to ship, thereby replacing convex heptagrams with winding number 3 by heptagrams with winding number 2.
Incidence matrix according to Dynkin symbol
x x7/3o . . .  14  1 2  2 1 +++ x . .  2  7 *  2 0 . x .  2  * 14  1 1 +++ x x .  4  2 2  7 * . x7/3o  7  0 7  * 2
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