It is said that there is a certain case in which the rolling resistance to a supertanker is relatively small compared with that to a cargo ship with C_b greater than about 0.73. The C_b, d/B, KG/B and Rollzahl T_γ√<g/B> etc. of the tanker are different from those of the cargo ship. The experiments and analyses were made to find their effect on rolling resistance. It is found that two of these elements, the KG/B and Rollzahl, have potent influence on the rolling resistance to the full ships.
