Comparing Giger's derelict to a spiral and a French curve

Leading from: 

Giger's derelict exterior 

a) Giger's original concept for the Derelict ship roughly shares features with shapes from a French curve set perhaps with the out outer spine broken leaving the semi stump like parts.

arm of Giger's derelict with elements of a french curve in its design

typical French curve set

b) From the above view of the derelict ship, one might take the right side of the hammer tip on the end of the left arm as a starting point for an anti-clockwise spiral centre and before where the arm ends as a stump, the body extends in another direction twice conforming to the rough outwards spiral

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clockwise spiral around the main dome of the derelict ship