Perhaps the most bizarre observation is that the cages of the EPIRB lighthouses were empty and the lighthouses were found at sea off the coast of Estonia near Dirham, along with life jackets and life rafts. The EPIRB beacon is thus a radiotelephone-like device designed to send a signal of the location of a sunken ship to rescuers. So why on earth have these vital rescue equipment been thrown (?) Out of the ship? The Rockwater men found the cages of the lighthouses empty, but the report does not say what condition the cages were in - I think quite relevant information. These discovered lighthouses were even first tested by the Finns in December 1994, and later they operated for another 4 hours in one bell at the Estonian icebreaker Tarmo, when the Russians noticed a continuous signal.
What are these EPIRB cages? An EPIRB buoy is an emergency transmitter that is attached to a vessel by a water pressure trigger designed to remove the EPIRB from the vessel at the time of sinking (the emergency transmitter does not go to the bottom). The EPIRB and pressure trigger are on a wall bracket (may have a plastic case today), on passenger boats usually with a stattubryka (cab roof) on the mast wall or railing. In Estonian times, it has been a cylinder-like, orange stump about 50 cm long. Another similar one may have been inside the bridge for inclusion, or on the other side of the ship in the rack. In the optimal situation, that buoy is taken into the liferaft or boat and launched manually, but often it detaches as the ship sinks and automatically begins to send a signal when in the water.
In the past, EPIRBs could be in a "cage" that was a frame with a pressure trigger. Many times still sprung so that when the pressure release was released, the frame was "shot" off the buoy. Many current plastic cases work in the same way.
EPIRBs in Estonia did not have a test switch as in the current ones. That Frogs was placed in a horizontal position and it fired after being upright long enough.
The Estonian spark had inspected the buoys' activities about a week before the accident and by then those had been operating normally. Those Kannadithan were tested as follows: the buoy's "cage" was carefully opened and the buoy was raised. When the indicator light started flashing, the cap was opened and the switch was turned to the OFF position. In that case, the alarm had not yet left, but the buoy "
Both EPIRBs in Estonia were turned off when found, would the buoys be left untuned after the test?