Alongside-Mutual Help Lifebuoy is an efficient piece of sea rescue equipment that can increase the number of people who are rescued. Lifebuoy has changed the status of the traditional lifebuoy. When a shipwreck occurs, its four corners easily and quickly connect, enabling people to take care of each other. The stronger buoyant force of the Lifebuoy enables more people to climb onto it and increases the number of survivors. It also helps facilitates search and rescue for the maritime rescue team.