A fluid loading joint , comprising: a first half provided at an end of a first vacuum double pipe , the first half including a first inner pipe , a first outer pipe , and a first blocking member , the first outer pipe forming a vacuum space between the first inner pipe and the first outer pipe , the first blocking member blocking between the first inner pipe and the first outer pipe , the first half being provided with a first inner flange at a distal end of the first inner pipe ; a second half provided at an end of a second vacuum double pipe , the second half including a second inner pipe , a second outer pipe , and a second blocking member , the second outer pipe forming a vacuum space between the second inner pipe and the second outer pipe , the second blocking member blocking between the second inner pipe and the second outer pipe and forming a gas space between the first blocking member and the second blocking member , the gas space being filled with gas, the second half being provided with a second inner flange at a distal end of the second inner pipe ; an annular inner insulator interposed between the first inner flange and the second inner flange ; and an annular outer insulator interposed between the first outer pipe and the second outer pipe , the outer insulator surrounding the inner insulator , with the gas space positioned between the outer insulator and the inner insulator , characterized in that the fluid loading joint is a swivel joint, the first half includes a cylindrical holder holding the first outer pipe such that the first outer pipe is rotatable, that an outer flange is fastened to the holder at a distal end of the second outer pipe , and that the outer insulator is interposed between the holder and the outer flange . a first half provided at an end of a first vacuum double pipe , the first half including a first inner pipe , a first outer pipe , and a first blocking member , the first outer pipe forming a vacuum space between the first inner pipe and the first outer pipe , the first blocking member blocking between the first inner pipe and the first outer pipe , the first half being provided with a first inner flange at a distal end of the first inner pipe ; a second half provided at an end of a second vacuum double pipe , the second half including a second inner pipe , a second outer pipe , and a second blocking member , the second outer pipe forming a vacuum space between the second inner pipe and the second outer pipe , the second blocking member blocking between the second inner pipe and the second outer pipe and forming a gas space between the first blocking member and the second blocking member , the gas space being filled with gas, the second half being provided with a second inner flange at a distal end of the second inner pipe ; an annular inner insulator interposed between the first inner flange and the second inner flange ; and an annular outer insulator interposed between the first outer pipe and the second outer pipe , the outer insulator surrounding the inner insulator , with the gas space positioned between the outer insulator and the inner insulator , characterized in that the fluid loading joint is a swivel joint, the first half includes a cylindrical holder holding the first outer pipe such that the first outer pipe is rotatable, that an outer flange is fastened to the holder at a distal end of the second outer pipe , and that the outer insulator is interposed between the holder and the outer flange . <EOS>