Annual Maintenance of Hydrographic Survey Wing Vessel MV Nirdheshak

Annual maintenanace of Hydrographic Survey Wing Vessel M V Nirdeshak belongs tom the Assistance Marie Surveyar Office Kottappuram.

Hauling up of vessel having a gross tonnage of up to 35 ton at a place as directed by the department officers keeping the vessel o at a height of 75 v CM above the ground level for inspection and launching same after under water repairs as directed by the Departmental Officers

Removed the thickly formed oyster coating and other vegetable growth from the underwater portion of the vessel including cleaning the surface etc complete asper the direction and satisfaction of Department Officers

Gauging the thickness of the plates ,beam ,frames etc at different portion of the vessel using ultrasonic thickness gauge after chipping ,scrapping and filling the surface to about 50 mm dia and pasting greased/oil overall as per the direction of department officers

Removing the propeller with shaft and bushes from the vessel and dismantling the propeller from the propeller shaft etc and renew the bushes and gland packing ,bend checking and straightening the shaft balancing the pitch correcting the propeller etc. all as per the direction of departmental officers

Chipping scrapping and cleaning the completes surface of the vessel body, machineries, pipelines and other accessories of the vessel body as per the direction of the departmental officers.

Remove the rudder with rudder stocks from its original positions for inspection ,Inspect the rudder ,Rudder stock ,bush etc for any damages, Renew the bushes if damaged and refit the assembly back in original position .Service the steering system in the vessel for smooth operation of the rudder all the works to be completed as per the direction and satisfaction of the Department officials

Dock rent of vessels up to 32 ton Net registered tonnage from the second day onwards.

Supplying and fitting by welding zinc anode weight 2.5 kg ( excluding the weight of bracket) with bracket on the underwater portion of the hull without any damage etc. Complete as per the direction of the department of the offices.

Supplying and painting with approved (quality of entire quantity of primer supply should be get inspected and approved by Engineer ,who is in charge of work /department authority before starting /continuation of the painting work)best quality ( Marine) yellow high rich zincromate metal primer two coats over all chipped surface after cleaning the surface etc. Complete as per the direction of Departmental officers.

Supplying and painting with approved (quality of entire quantity of primer supply should be get inspected and approved by Engineer ,who is in charge of work /department authority before starting /continuation of the painting work) best quality Tie -coat paint ( Marine quality) over the primer applied surface after cleaning the surface as per the direction of the Departmental Officers.

Supplying and painting two coats to the underwater portion with anti-fouling paint (quality of entire quantity ofanti-fouling paint supply should be get inspected and approved by Engineer ,who is in charge of work /department authority before starting /continuation of the painting work) over the paint already done etc. complete as per the direction and satisfaction of departmental officers

Supplying and painting with approved (quality of entire quantity of marine synthetic enamel paint supply should be get inspected and approved by Engineer ,who is in charge of work /department authority before starting /continuation of the painting work) marine synthetic enamel paint of existing colour two coats over the primer coat already done on vessel body, machineries, pipelines with colour code and other accessories etc .as per the direction and satisfaction of Departmental officers.

Cutting and removing the old damaged ,weakened ,severely damaged various thickness ms plate /ms flat/ms angles /ms rods /beams /girders etc. market by departmental officers in various place of the vessel without damaging any other portion / structures/member on the vessel as per the direction of department officers

Supplying and welding with new various thickness marine quality ms plate /ms angle//ms flat/ms rod/beam/ gazette of existing size and shape tom the various portions on the vessel is already removed damaged portion ,after heating and bending into shape ,V cut on the matting edge of the plate and welding three layers of on both sides together .The rate including the cost material ,welding charges ,tools ,plants ,scaffolding, Other incidental expenses etc. Complete as per the direction of department Officers.

Removal and refitting of Plywood panels inside the crew room of the vessel without damaging the plywood and beedings and replace the already damaged beeding with new one of existing size an dimensions as per the direction of the Department officials .