Realistic ocean freighter vertical sorting casual game. Large, medium and small shipping containers fall endlessly from above the cargo ship deck. Slide horizontal compartment dividers up and down to split three independent storage lanes, steering every container into its size-matching hold. Any mismatched container draining hull durability, and full durability loss terminates your run. Harder rounds speed up container falling velocity, mix random-sized cargo batches nonstop, shrink usable storage space per layer, and add lag delay to divider sliding controls. Dark industrial cargo vessel dock visuals with smooth vertical divider swipe mechanics for marine logistics casual downtime.