Question: what are the materials used in ship structures and construction?
Answer: Steel: This is a highly versatile ship construction material and is used extensively on ships for the making of its integral structure and parts. ... 
Aluminium Alloys: ... 
The Shell Plating: ... 
Insulation: ... 
Superstructures: ... 
Watertight Doors: ... 
The Stern Frame: ... 
Rudder Pintles: