procurement of 4 nos trash skimmer equipment with all accessories. , aquatic trash skimmer having a storage capacity of 4 cu.m, and overall size ( approx. 8.3m length x 3m width x 2.3m height or equivalent ) with diesel engine of minimum capacity 25hp, paddle wheels drive, ss conveyor belts and barge, hull fabricated with 4 water tight compartment in ss304 / marine steel , hydraulic pumps, motors, d.c. valves, hydraulic cylinder and complete in all respect including flexible control panel, trash collecting guiding arms with hydraulic cylinder, two men operation with seat , canopy, direction control valves and movement mechanism complete in all respect. the rates considered are exclusive of taxes but inclusive of freight etc. , aquatic trash skimmer having a storage capacity of 9 cu.m, and overall size ( approx. 11.5m length x 3.5m width x 2.3m height or equivalent ) with diesel engine of minimum capacity 35hp, paddle wheels drive, ss conveyor belts and barge, hull fabricated with 6 water tight compartment in ss304 / marine steel, hydraulic pumps, motors, d.c. valves, hydraulic cylinder and complete in all respect including flexible control panel, trash collecting guiding arms with hydraulic cylinder, two men operation with seat, canopy, direction control valves and movement mechanism complete in all respect. the rates considered are exclusive of taxes but inclusive of freight etc. , cost of comprehensive maintenance of the above machines including repairing, spare parts, servicing etc. except oil & lubricant for 5 years.