MOORING ANCHOR FOR POLLUTION PREVENTION FILM

摘要

PROBLEM TO BE SOLVED: To provide a mooring anchor which is easily installed and carried even by a small work boat at low cost. SOLUTION: This mooring anchor comprises an air chamber 2 having a hollow space therein, and a weight body 1 joined with a lower part of the air chamber. An air hole 4 to take air out of/into the air chamber and a water pouring/discharging hole 3 to charge/discharge water in/from the air chamber are formed in the air chamber. The buoyancy when the air chamber is filled with air is set to be larger than the total gravity of the air chamber and the weight body. COPYRIGHT: (C)2004,JPO