Download A Guide to Ship Repair Estimates in Man Hours by Butler, Don (Auth.) PDF

By Butler, Don (Auth.)

Expert send surveyor Don Butler stocks a lifetime's send fix costing adventure during this distinct source for actual price estimation and planning

  • Includes challenging to return through info on usual send fix exertions expectancies for actual man-hour forecasting and value estimation
  • Produced for marine engineers and marine execs to help with fix specification and negotiation, aiding you to plot paintings and budgets extra reliably
  • Uses man-hours rather than specific charges or currencies, offering a long term version for pricing despite place, price fluctuation or inflation

Bringing jointly another way scattered information on particular fix and dry-docking actions, this important advisor will prevent time and increase the accuracy of your send fix estimates. do not plan or fee paintings with out it!

Don Butler is a fellow of the Institute of Marine Engineers and a member of Society of Consulting Marine Engineers and send Surveyors, UK.

  • Made up of very challenging to come back by means of details on ordinary send fix exertions expectancies for exact man-hour forecasting and price estimation
  • Produced for marine engineers and marine pros to save lots of time, relief in fix negotiation and aid businesses to devise extra reliably
  • Man-hour listings help in long term pricing, that means the e-book content material continues to be legitimate despite foreign money, expense fluctuation or inflation

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Additional resources for A Guide to Ship Repair Estimates in Man Hours

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Input the data into the table and use the formula to determine the weight of zinc anodes for the period required. Drydocking works 27 Formula to determine the weight of sacrificial aluminum anodes required on a ship’s underwater area Underwater area of ship in sq. meters Number of years between anode change Capacity of material in amp hours/kg Current density of material in mA/m2 (ave. g. 3) K = Number of hours in 1 year = 8760 Capacity of material (amp hours / kg) = Information from manufacturer (for aluminum, 2600 is common) Using the above formula, it is a simple matter to formulate a spreadsheet to determine the weight of zinc anodes.

2 Cylinder liners – 1 Withdrawal of cylinder liner, cleaning exposed areas as far as accessible, installation of new, owner’s supplied liner and rubber seals. Cylinder bore (mm) Man-hours per cylinder 500 550 600 650 700 750 800 850 900 950 1000 60 62 67 72 77 82 90 97 107 120 135 Note: Assuming that cylinder head, piston, and piston rod are already removed as part of the top or complete overhaul. 3 Bearing survey – 1 Opening up for inspection, exposing both halves, cleaning, calibrating, and presenting for survey.

Opening ‘Kenter’ type shackle and later closing. Disconnect first length of cable and transferring to end. Changing cable end for end. Small vessels Cable dia. 16 Chain lockers (per side) Opening up, removing dry dirt and debris, handscaling, cleaning, and painting one coat bitumastic. Closing up on completion. Removing internal floor plates, or grating, cleaning, painting, and refitting. Small vessels Cable dia. (mm) Man-hours (per side) <25 25–50 75 90 Large cargo vessels and oil tankers DWT Man-hours (per side) <20,000 20,000–50,000 50,000–100,000 100,000–200,000 200,000–300,000 Over 300,000 100 130 140 200 250 270 Note: Removal of sludge will be charged extra per m3.

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