Four main purchasing streams are represented in the main supply chain for cruise line: fuel purchasing, corporate purchasing, technical purchasing, and hotel purchasing. Fuel purchasing is re- sponsible for acquiring and delivering fuel and other petroleum products such as lubricant to the ship for its daily consumption. Corporate purchasing looks after most items required shore side as well as some corporate items used onboard such as office supplies and computers. Technical purchasing is the items mostly used by facility departments and marine departments such as engine parts, carpeting, etc. Finally, hotel purchasing is the department ensuring that foods and other consumable items required for the hotel operations are in place.