Accropod block - Concrete armour unit - Breakwaves

This is another popular form of concrete blocks used to make breakwaves. Example in photo is from Palamos harbour in Catalonia, Spain.

In 1985 if you wanted to be a civil engineer in France (Ingénieur TPE) you had to draw an isometric perspective and a side elevation of the block, given the plan & the front elevation (proposed here). Wanna try ?

My challenge was to make it in 3D with the same data...not that easy either!

If not scaled the print will be 40mm high.
Please post your makes

Here are my other concrete blocks for breakwaves
Accropode
https://www.thingiverse.com/thing:2328727

Tetrapode
https://www.thingiverse.com/thing:2324210

Core-loc
https://www.thingiverse.com/thing:4825866

Cubipod
https://www.thingiverse.com/thing:4825904

Dolos n°50
https://www.thingiverse.com/thing:4825877

Xblock 4,5m3
https://www.thingiverse.com/thing:4826627