While anchors are significantly important for floating type structures, neither the anchor resistance against pulling force is mede clear nor experimental data are sufficient. Therefore, an experimental study on the pulling resistance of block anchors, which are frequently used for the port and harbor facilities, are carried out particularly focusing on the case when they are burried deeply. Several series of pulling tests aremade for the model anchors embedded in the uniform sand with carious depths. The model anchors used are cubes with sides 5-10cm long and spheres with diameters of 5-10.5cm.Using the experimental results, the floolwig relations are examined: the relation between the resisting behavior and the conditions of the anchors (shape nad scale), the relation between the resisting behavior and the conditions of the anchors (shape and scale), the relation between the ultimate resistance and the conditions of the anchors, and the relation between the ultimate resistance and the embedded depth of the anchors.