Fishing and Gear Technology

Unit 7 - Floats and sinkers

7.5.Determination of buoyancy of a float
A suitable piece of netting is attached to an iron frame to form a scoop net. Three lines of equal length are tied together to which sufficient weight to keep the float submerged completely in water is attached. Two more lines are tied to the frame at diametrically opposite points of the frame, the free ends of which are tied to a wooden piece. A container of sufficient size with enough water is taken. A wooden platform with a pan balance is placed on the container. The scoop net with a weight is suspended in the water without touching the side and bottom of the container. The initial weight of the balance is noted. The float to be tested is inserted into the scoop net from below. Adjust the weight so as to submerge the float under water. Find the reading. The difference between the final and initial reading is the lifting capacity of the float.