I Firstly drew the primary blue outer shape in polylines. Then I manually drew in the black body dividing lines adding more where I though I may need more control over points to manipulate the shape. I then deleted the outer line and redrew the polyline outer to match the inner divisions so all the divisions ended as quads. Same process for the legs.

I have rhino7 with subd but love the simplicity of the MOI tool set so I took inspiration from this video,

https://www.youtube.com/watch?v=EaB548qwpm4