What is cargo gear used for?

A
Cargo-handling gear is used to secure cargo while it is being raised or lowered by the ship's gear.
B
Cargo gear is used to discharge cargo while vessel is empty.
C
Cargo-handling gear is used to secure steel coils in cargo holds.
D
Cargo-handling gear is used for only loading the vessel.
E
Cargo-handling gear is used for only discharging the vessel.