Rescue officials will require strong and even swim, and through the training of technical skill are the rescue and first aid. In some of these officers are trained to use a rescue boat.
The rescuer must swim a good and strong. And trained and skilled technical rescue and first aid. Perhaps these officers were trained to use the ship as a rescuer.
Lifeguard must swim well and strong. And through practice and is skilled in the techniques of rescue and first aid. Sometimes these officers are trained to use paramedics as well.