Beth-El Industries designs and produces custom air conditioning systems for vessels to supply clean, conditioned air to multiple personnel areas within a vessel, such as the wheelhouse, utility rooms, and equipment rooms. The system is designed with thermodynamic heat load analysis, so that it will match the thermal gain of a vessel as the temperature varies during a 24 hour period. The air conditioning system is water cooled, using sea water, and is proficient in creating a very comfortable level of dehumidification and cooling. The system is designed to work with a CBRN filtration system, but can operate separately as well. In combination with the filtration system, the arrangement creates a complete environmental protection system that is fully controlled from a custom remote control.