Basically, they are working on the container vessels.The materials they use are, 'container lashing turnbuckle', 'container lashing bar', etc.
Basically, they are working on the conventional vessels.The basic materials they use are, 'steel wire rope', 'wire clip', 'turnbuckle', 'shackle', 'nail', etc.
Ro-Ro ships are vessels designed to carry wheeled cargo such as vehicles that are driven on and off the ship on their own wheels.