Packing has three main functions for transporting goods by sea: to protect goods, keep consignments together, and prevent damage to the environment. Different types of packaging materials and containers are used depending on the nature, weight, and volume of goods as well as the mode of transport. Shipping containers come in various types for general, refrigerated, and specialized cargo and must meet standard dimensions and regulations for safe transport. Proper packaging and labeling of goods is important for shipping by considering factors like cargo type, destination, and handling instructions.