This artificial wreck is made of floral foam (styromoam for flowers) coated with cement.
Subscribe : https://goo.gl/J4sgjG
You can make it yourself at home using other styrofoam. Noteworthy is to balance the weight of cement and styrofoam so that when it is placed in the tank it is not floating.
This ship can be used as an aquarium decoration and can beautify aquascape with a good layout.
DIY smal shipwrek for decoration:
Styrofoam mini waterfall: