Johnson AquaT Manual Comfort Marine Toilet A great choice for both sailing and power crafts, Johnson AquaT manual toilets are quiet, robust, and easy to clean. These toilets are made from vitreous porcelain with corrosion resistant parts throughout. This manual toilet incorporates an ergonomically designed, hand-powered piston pump that can be mounted for either left-hand or right-hand operation. Comfort model toilets feature a larger, more comfortable oval seat. This toilet can be installed in