Like the LNG loading and unloading skid, the LH2 loading and unloading skid must also meet the requirements for use in low temperature environments. However, because liquid hydrogen requires a lower operating temperature (boiling point -253°C), its design requirements are more stringent. For example, since the boiling point of liquid hydrogen is much lower than that of liquid nitrogen (-196°C) and liquid oxygen (-183°C), if the pipe surface is directly exposed to air, nitrogen and oxygen will liquefy and gradually pool into droplets, eventually drip and cause an accident. Therefore, it is necessary to adopt a jacket structure design to ensure that the above situation is prevented.