Abstract: A vessel for collecting liquid has a plurality of juxtapositioned hollow bodies secured to one another to form an assembly. Each hollow body defines an essentially closed inner chamber separated from one another. There are further provided liquid-collecting grooves extending on a top external surface of the assembly. Each groove is defined by adjacent external surface portions of two adjoining hollow bodies. Drainage openings are provided in the hollow bodies within the confines of the grooves at the respective bottom thereof for maintaining communication between the respective grooves and the respective chamber therebelow.