General safety roles, Safety systems –. Relevant IMO/SOLAS/Class Regulations and conventions concerning safety of life at sea. Types of hazards. Fire protection and firefighting equipment: Fire detection systems, fire-main systems, CO2 and foam extinguishing systems, hand portable and semi-portable fire extinguishers. Lifesaving appliances: Lifeboats, L.S.A. Boats life rafts, PFDs, exposure suits, ring life buoys, ship's distress signals and emergency equipment. Safe handling dangerous, hazardous and harmful cargoes.