Rust-corals: (primitives and techniques). For making the rust (corals) I use a simple Spheres as a tool and Coloured Spray + Draw mode (image 18).
Ship’s body: (boards, cracks, etc). The ship’s boards are Cubes scaled to look like a board, then I place the boards one by one to make them look old and messy (image 19).
Shadersused for the Ship: Main Shader (image 20); Rust shader (image 21)