Design a Tethered/ Expendable Submarine Communication Buoy

Design a Tethered / Expendable Submarine Communication Buoy. The Tethered Submarine Communication buoy should be capable of being released I retracted from a depth of 300 m with the submarine propelling at speeds upto 6 knots. The communication buoy should house antennae's capable of receiving VLF, HF and SATCOM and transmitting SATCOM and HF signals