Strength test method for anchor installed underwater and floating body

Abstract

A simplified structure allows inspection of the installation strength of an anchor installed underwater. A method includes applying, to an anchor, a lifting force from above a floating body floating on a water surface to submerge the floating body into water, and setting a volume of submergence by which the floating body is submerged to a value to produce a lifting force corresponding to a predetermined installation strength and determining whether the anchor is immovable. The volume of submergence by which the floating body is submerged to produce the lifting force corresponding to the predetermined installation strength is calculated based on the buoyancy acting on the floating body.

1 . A strength test method for an anchor installed underwater, the method comprising:
 applying, to an anchor installed underwater, a lifting force from above a floating body floating on a water surface to submerge the floating body into water; and   setting a volume of submergence by which the floating body is submerged to a value to produce a lifting force corresponding to a predetermined installation strength and determining whether the anchor is immovable.   
     
     
         2 . The strength test method according to  claim 1 , further comprising:
 retaining the floating body being submerged by the volume of submergence having the set value.   
     
     
         3 . The strength test method according to  claim 1 , further comprising:
 determining the volume of submergence by which the floating body is submerged with a gauge included in the floating body.   
     
     
         4 . The strength test method according to  claim 1 , wherein
 the floating body includes a working platform used to install the anchor.   
     
     
         5 . A floating body configured to float on a water surface to conduct an installation strength test for an anchor installed underwater, the floating body comprising:
 a gauge configured to indicate a depth or a volume by which the floating body is submerged in water.   
     
     
         6 . The floating body according to  claim 5 , wherein
 the floating body comprises polystyrene.