Abstract
TRITON buoy system consists of unmanned mooring system in the ocean. In
some areas where the buoy are moored, observational instruments are detached and
stolen. Such destructive acts are called Vandalism. Japan Marine Science and
Technology Center (JAMSTEC) tries to prevent Vandalism, of course. Since the
cycle of deployment and recovery of each buoy is about one year, only once a year
prevention can be tested. So far, the following prevention was proved to be
remarkably effective; (1) Change of towers in material from alminium to stainless,
(2) Change of antennas in shape from a whip to a disk.
