bids are invited for tug hire charges - gmb approved tug for retrieval, towing, securing at ghogha jetty and relaying 800 to 1000 hp , sand blasting - sand blasting of perigee light vessel , spray painting of under water area - supply of special marine grade paints and spray painting of underwater area.the painting scheme shall be 3 coats first coat primer , second coat anti corrosive, final coat anti fouling paint , spray painting of above water area - supply of special marine grade paints and spray painting of above water area.the painting scheme shall be 4 coats first and second coat primer ,third and fourth coat marine epoxy paint as per paint scheme , bus green epoxy paint - bus green marine grade epoxy paint , metal primer epoxy - metal primer suitable for epoxy paint , p o red epoxy paint - p o red marine grade epoxy paint , thinner , sea going skilled labour - chipping, scrapping and painting of trestle tower and wheel house , miscellaneous purchase - cotton waste, grease, hss blade, paint brushes, roller, wire brush, cable, cable ties, lugs etc. , overhauling winch assembly - cleaning, servicing and greasing of mooring chain winch assembly , thickness gauging - thickness gauging of duckt keel plates , fabrication work - fabrication and installation of 200mm dia 8mm thick half round fenders , fabrication work - fabrication and installation of hatch cover, light pedestal, ladder, door,hand railing m.s etc , fabrication work - fabrication and installation of name bord m.s , installation of zinc anode - supply and installation of zinc anode 400 by 100 by 25mm , supply of kenter shackle - kenter shackle suitable for 50mm dia mooring chain with irs certificate , supply of swivel - swivel suitable for 50mm dia mooring chain with irs certificate. , fitting and welding of shackles - joining and locking of new swivel and kenter shackle , sand blasting and painting of mooring chain - removing mooring chain from chain locker and blasting and 2 coat paint , welding , po