Cargo that has been strapped to the deck of the ship rather than stowed in a hold.
In an Airbus A320-A370 it is called a cargo copartment but in the A380 it is called a cargo deck. Cargo compartment usually refers to the lower belly compartments. IF the aircraft is a Freighter, then the main deck is usually referred to as the Main Cargo Deck. Not sure if that applies to Airbus.
If you are talking about a cargo ship then the cargo is kept right on the deck of the boat.
Below deck
1 deck
On the upper deck of a cargo ship there will usually be the navigation equipment and access to essential safety equipment such as lifeboats. These are actually slung from the side but accessible from the upper deck.
cargo where a piece is over 64 inches in heighth with other dimensions allowing it to remain on the pallet
Cargo hold
The term is actually 'cargo hold' and is used for ships and aircraft for holding cargo, typically below decks. Cargo ships, however, generally carry all cargo in huge steel containers above deck and passenger ships' cargo is people, which are appointed cabins throughout the vessel.
The C-130 has 175 tie down rings on the cargo floor and 33 on the cargo ramp for a total of 208 tie down rings.
A Combi aircraft is a two deck plane that is designed to carry loads of cargo on the upper deck. Normal airliners, however, typically have just one deck.
The name given to the cargo area that was reserved for slaves was called the Tween Decks, and it was located between the deck and the hold of the Slaver
Four. The main deck, the steerage, top cargo, and the hold.