Repair And Maint Work Of Engine Side Of Survey Boat 105, 5 Repair And Maint Work Of Engine Side Of Survey Boat 105 At Main Location Guwahati. Re- Mentaling Of Both Side Propeller Shaft. Alignment And Balancing Of Both Side Propeller Shaft. Re-Metaling Of Both Side Propeller Fan. Alignment And Balancing Of Both Side Propeller Fan. Bushes On Both Side To Be Replaced And Fitted.