repair / refurbishment of doors , hatches and port holes onboard large naval vessels at nsry ( karwar ) , repair of wt doors ( structural ) ( material ms ) , repair / renewal of coaming of doors , structural coaming , straightening of bent doors , repair / renewal of retainer hook , locks , auto locks , repair / renewal of hinges pins , hinge assembly , repair / renewal of rubber beading and removal & fitment , conduct of chalk test . , repair of wt hatches ( structural ) ( material ms ) , repair / renewal coaming of hatches , structural coaming , frames , straightening of bent hatches , repair / renewal of locks , auto locks , repair / renewal of hinges pins , hinge assembly , repair / renewal of rubber beading , removal & fitment , conduct of chalk test . , modification of wt hatches ( material ms ) , fitment of additional spring mechanism . , fitment of wt hatch , fitment of new water tight hatch ( supplied by navy ) , repairs of nwt doors ( material al ) , repair / renewal of coaming of door , structural coaming , frames , repair / renewal of locking mechanism , hinges , , repair / renewal of handles , tower bolts , stoppers , latches , repair / renewal of rubber beading and removal & fitment , repairs of port holes ( material ms / al ) , repair / renewal of hinges , locking mechanism , repair / renewal of rubber beading , repair / renewal of metal coaming , conduct of chalk test . , replacement of fittings of wt doors , retainer hook on bulkhead . , door lock assembly . , locking handle assembly . , hinge pins . , hinge assembly . , wedges . , rubber beading . , replacement of fittings of wt hatches ( material ms ) , hatch lock assembly . , locking handle assembly . , hinge pins . , hinge assembly . , wedges . , spring mechanism , rubber beading . , replacement of nwt doors ( material al ) , locking mechanism with spares . , hinges . , handles . , latches . , rubber beading . , replacement of port holes ( material ms / al ) , hinges . , port hole cover . , rubber beading .