Marine Duty Transformers are ruggedized to meet the demands of all types of commercial & pleasure ships, offshore oil rigs, dockside applications and other harsh environments. Marine-duty transformers are optimized for medium-voltage applications. These transformers are commonly installed below deck on ocean-going vessels as well as vessels used by marine interests. Marine duty transformers are suitable for installation in locations with an average ambient temperature of 50°C without exceeding the rating of the insulation system.