The current paper pretends to offer a global vision about the actual situation of the regulations and requirements applied to High Voltage Shore Connection (HVSC) systems, also known as cold ironing. To develop the entire study, the following Classification Societies rules have been consulted: ABS – High Voltage Shore Connections; BV- High-Voltage Shore Connection System; DNV-Electrical Shore Connections; DNV-GL- Rules for classification of ships; LLOYD’S REGISTER-Rules and regulations for the classification of ships and RINA-Rules for the classification of ships. In the way to accomplish the proposed objective, the mentioned rules have been compared including all the specific aspects and regulations related with “the shore side” of the entire installation. These requirements are also compared with the international standard ISO/IEC/IEEE 80005-1 High Voltage Shore Connection Systems and show the grade of accuracy provided by each Classification Society against that standard. Finally, the results of the comparison show that many of the studied rules focus their rules just on the ship side of the installation or just provide some general recommendations for the shore side. According to that, the shore side is considered such as not part of the ship and consequently is not considered in their rules.