A marine vessel is disclosed having a control system for automatically controlling thrusters for steering the marine vessel for the purpose of aiding an angler who has hooked a fish. The shelving unit includes first and second supports which are typically panels, and which help to support against the loads generated by the objects being stored. The present invention is further directed to a method for installing a caisson on a floor of an ocean or inland. A first RF filter may be connected to the recharging power input, and a second RF filter may be connected to the audio analog signal output, both for reducing RF interference over the predetermined frequency range from the adjacent mobile wireless communications device. The tubular shield has a set of resilient radially inwardly extending contact fingers for electrically connecting about the complementary terminal end when the second connector housing is connected to the first connector housing.