Frame systems
Operation of an electrical vibracorer deployed in a bouyant frame system.  The vibrating unit descends by gravity along taut cables between the bouys above and a weighted stand below.  Power and lift cables to the surface are kept slack during the procedure.
Rossfelder Corporation
A Rossfelder P-3 vibracorer mounted in a rigid frame system (optional floats not shown).  This rig is better suited to shallower and/or turbulent waters.
Hydroacoustics SL