A surface-controlled, nonrecoverable instrumented vehicle that can penetrate polar ice sheets down to 3,600 meters by melting.

It can be used to measure temperature, stress, ice movement; as well as, seismic, acoustic and dielectric properties.

The probe consists of a hot point for melt penetration, instrumentation for control and measurement functions, two supply conductor coils to link the probe with the surface for transmission of power and measurement signals, and a reservoir section.

The probe is filled with a dielectric fluid or fluid with high electrical resistance.