Remote self-contained undersea monitor

A remote oceanographic data recording system which is self-contained battery operated and removably attachable to an external surface of a submerged hull without a need to penetrate said hull is presented. The system is capable of gathering and recording oceanographic data and may be joined to the hull of a submarine without interfering in submarine operation in any way. The system receives analog ac and dc electrical input signals from a variety of oceanographic data sensors and converts the signals to digital data signals for recording on magnetic tape cassette. The housing the system is watertight and capable of withstanding external hydrostatic pressures up to 1620 psi.