The present invention relates to an emergency position indicating radio beacon terminal for confirming positions of ships and rescuing the ships during a marine disaster in a marine search and rescue system and an apparatus and a method for monitoring an operating state of the EPIRB terminal. This permits the pin members to be positively press-inserted into pin holes of the link plates and hence, the fabrication of the power transmission chain is facilitated. This invention further relates to a device capable of receiving and displaying two-dimensional and three dimensional images. The uncovered segment of the material is anisotropically etched to form separated spacers from the uncovered segment. The linters are removed using reduced pressure and the processed seeds are removed. A network bus communicates first transducer data and second transducer data with the controller.