A life raft is a type of vessel used for emergency evacuation in the event of a disaster. It is typically made of lightweight materials such as BALSA wood or inflatable rubber and is designed to be buoyant and able to carry multiple passengers. Two common types of life rafts are BALSA rafts, which are constructed from BALSA wood, and dinghies, which are small, lightweight boats. Both types of life rafts provide a safe and reliable means of evacuation in an emergency situation.