“ALONGSIDE” is quadrilateral marine life buoy which has changed the rescue status of the traditional lifebuoy, when the shipwreck occurs, the four corners structure of life buoy can help life buoy quickly connect to each other together. through the combination, it makes man overboard to help each other in times of crisis. Crucially, lifebuoy group in a huge buoyancy for many people climb up , also will produce more of the space between, between life buoy and every been designed intervals can increase a user, so a limited number of buoy will be able to provide the chance of survival for more of them, have a greater relief effect.