Chapter 1: Marine Environments and
                   Corrosion                                   13


Marine Environments and Corrosion

Atmospheric Sea Exposure (Offshore)

High and Low Tide (Splash Zone)

Deep Water (Immersion)

Prevention and Control of Marine Corrosion






Chapter 2: Oil Tankers                                27


Top 10 World’s Largest Ships

  1. Seaweise Giant
  2. Pierre Guillaumat (supertanker)
  3. Batillus
  4. Prairial (supertanker)
  5. Esso Atlantic
  6. Emma Maersk
  7. TI class supertanker
  8. Globtik Tokyo
  9. Jarmada class
  10. MS Vale Brasil




Chapter 3: Type of Corrosion in Oil Tanker

General corrosion, MIC, Pitting, Grooving corrosion, SCC and

 Hydrogen Cracking

Corrosion in Oil tanker

General corrosion attack

Microbial Induced Corrosion (MIC)

Pitting Corrosion

Grooving corrosion

Stress Corrosion Cracking & Hydrogen Cracking




Chapter 4: Mechanisms of Corrosion In Oil tankers           

                   Cargo Tanks; Ballast Tank; Board

                   Structure; Outside Hull  


Mechanisms of Corrosion in Cargo Oil Tanks

    First: Corrosion of the upper deck plate

    Second: Corrosion of the inner bottom  plating


Corrosion in Ballast Tank

Corrosion in Double-Hull Tankers

Corrosion in different location in the tanker

  1- Side Shell and Bulkhead Stiffeners

   2- Under Deck Areas

   3-Stringer platforms and under bellmouths

   4- Other Locations

Corrosion Outside Hull

Corrosion in Propeller

Corrosion of Topside Structures






Chapter 5: Corrosion Control                               87


Material Selection

Topside Equipments

Hull Construction

Newly-developed corrosion resistant steel and its application in cargo

ballast and tanks

Cathodic Protection

  • Cathodic protection by external power supply (impressed current)
  • By a suitable galvanic coupling (sacrificial anode)

Stray Current Interference





Chapter 6: Coating                                                 107

Mechanisms of Coatings


Coat Components



                                     Pigments and Extenders


Types of coatings

Inorganic Zinc silicate Coating 

Epoxy coatings

Pure Epoxies

Epoxy Phenolics

Epoxy Isocyanates

Cyclosilicon Epoxies

Coal tar epoxy (CTE)

Surface pre-treatment

    Sand blasting


Standards specifications of blast-cleaning

   Application of Coating

Pre-construction Primer

Block Stage Holding Primer


Environmental Control

Seawater Testing- Tank Final Inspection

Aspect of Coating New-Building Oil Tanker

Coatings Application Rules




Chapter 7: Oil Tankers, Chemical tankers and Dry Dock in  Gulf Cooperation Council (GCC)
                                                                                   1 36                                               

 Gulf Cooperation Council (GCC)

 Oil Tankers in Bahrain

     Bahrain Petroleum Company (BAPCO)

     Dry Dock in Bahrain


      Dock 1

Dock 2

Dock 3


 Oil Tankers in Kuwait

Kuwait Oil Tanker Company (KOTC)

Kuwaiti oil tanker fleet

            Very Large Crude Carriers (VLCC’s)

Product Carriers


 Oil Tankers in Oman


Oman Shipping Company (OSC)

Oman Oil Company S.A.O.C. (OOC)


 Oil Tankers in Qatar

Khawr Aladid



Qatar National Navigation Transport Co. (QNNTC)


Oil Tankers in Saudi Arabia


         The National Shipping Company of Saudi Arabia (Bahri)

Fleet of Bahri

Oil Tankers in UAE

Abu Dhabi National Tanker Co (ADNATCO)

The National Gas Shipping Company (NGSCO)






Chapter 8: Inspection and Maintenance of Oil Tankers; Oil Tankers Disaster                             168


Maintenance and Repair


Pit filling


Water Washing of The Tank


Oil Tankers Disaster

  1. V. Castor Disaster


The Nakhodka disaster

Investigation Report

Causes of the Nakhodka casualty


Erika Disaster

General characteristics

Corrosion problems





Appendix A: Calculation of Corrosion Rate                          192                                      


Appendix B: Corrosion and Electric Concepts                      200


Appendix C: IACS Recommendation                                      204





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