SIMA is formed by a platform which in some designs may be a toroidal float (left photo) or a
larger structure (right photo). In the center of buoy platform there is a tower where are
fixed the solar panel, meteorological sensors and the antenna. In a sealed structure
(in the center of the buoy) a compartment housing the electronic system, battery and the
satellite transmitter. The submerged sensors are connected to the electronics by sealed cables.