A waterless urinal for a vehicle , the waterless urinal comprising: a fluid bowl having a drain ; and a waterless urinal cartridge removably disposed within the drain , the waterless urinal cartridge including a housing forming an internal cavity , said housing having a waste reservoir disposed within the housing and being configured to hold a predetermined volume of urine (V), and the waste reservoir having a drainage aperture configured so that an amount of urine (VA) exceeding the predetermined volume of urine (V) flows through the drainage aperture and the internal cavity to exit the housing , and a cover coupled to the housing and forming part of a surface contour (SC) of the fluid bowl , the cover including a sealing fluid reservoir and a plurality of fluid passages for directing urine from the fluid bowl to the sealing fluid reservoir , characterised in that each of the plurality of fluid passages having a shape defined by a diameter of about 2.39 mm within the cover , the sealing fluid reservoir being in communication with the internal cavity of the housing , wherein the waste reservoir includes at least one fluid flow control feature comprising a gimballed coupling that couples the waste reservoir to the housing , said gimballed coupling is configured to provide rotation of the waste reservoir relative to the vehicle in response to a change in vehicle dynamics to limit urine movement within said waste reservoir . a fluid bowl having a drain ; and a waterless urinal cartridge removably disposed within the drain , the waterless urinal cartridge including a housing forming an internal cavity , said housing having a waste reservoir disposed within the housing and being configured to hold a predetermined volume of urine (V), and the waste reservoir having a drainage aperture configured so that an amount of urine (VA) exceeding the predetermined volume of urine (V) flows through the drainage aperture and the internal cavity to exit the housing , and a cover coupled to the housing and forming part of a surface contour (SC) of the fluid bowl , the cover including a sealing fluid reservoir and a plurality of fluid passages for directing urine from the fluid bowl to the sealing fluid reservoir , characterised in that a housing forming an internal cavity , said housing having a waste reservoir disposed within the housing and being configured to hold a predetermined volume of urine (V), and the waste reservoir having a drainage aperture configured so that an amount of urine (VA) exceeding the predetermined volume of urine (V) flows through the drainage aperture and the internal cavity to exit the housing , and a cover coupled to the housing and forming part of a surface contour (SC) of the fluid bowl , the cover including a sealing fluid reservoir and a plurality of fluid passages for directing urine from the fluid bowl to the sealing fluid reservoir , each of the plurality of fluid passages having a shape defined by a diameter of about 2.39 mm within the cover , the sealing fluid reservoir being in communication with the internal cavity of the housing , wherein the waste reservoir includes at least one fluid flow control feature comprising a gimballed coupling that couples the waste reservoir to the housing , said gimballed coupling is configured to provide rotation of the waste reservoir relative to the vehicle in response to a change in vehicle dynamics to limit urine movement within said waste reservoir . <EOS>