Spaces used for cargo, cargo oil tanks, tanks for other liquid cargo and trunks to such spaces, (SOLAS).
- Closed ro-ro cargo spaces – Ro-ro spaces which are neither open ro-ro spaces nor weather decks, (SOLAS).
- Closed vehicle spaces – Vehicle spaces which are neither open vehicle spaces nor weather decks, (SOLAS).
- Open ro-ro cargo spaces – The ro-ro spaces which are either open at both ends or have an opening at one end, and are provided with adequate natural ventilation effective over their entire length through permanent openings distributed in the side plating or deckhead or from above, having a total area of at least 10% of the total area of the space sides, (SOLAS).
- Open vehicle spaces – The vehicle spaces which are either open at both ends or have an opening at one end, and are provided with adequate natural ventilation effective over their entire length through permanent openings distributed in the side plating or deckhead or from above, having a total area of at least 10% of the total area of the space sides, (SOLAS).
- Ro-ro spaces – Spaces not normally subdivided in any way and normally extending to either a substantial length or the entire length of the ship in which motor vehicles with fuel in their tanks for their own propulsion and/or goods (packaged or in bulk, in or on rail or road cars, vehicles (including road or rail tankers), trailers, containers, pallets, demountable tanks or in or on similar stowage units or other receptacles) can be loaded and unloaded normally in a horizontal direction, (SOLAS).
- Vehicle spaces – Cargo spaces intended for carriage of motor vehicles with fuel in their tanks for their own propulsion, (SOLAS).