Ship Hull Inspections

1. Inspection, reporting and
assessment of reported defects and
damages

2. Areas to be inspected

6. • Knowledge and ability to explain where to look for damages and
defects most commonly
• encountered due to:
• .1 loading and unloading operations
• .2 corrosion
• .3 severe weather conditions
• — Ability to state which parts of the ship shall be inspected each
time in order to cover all parts within a given period of time
• — Identify those elements of the ship structure which are critical to
the safety of the ship
• — State the causes of corrosion in cargo spaces and ballast tanks
and how corrosion can be identified and prevented
• — Knowledge of procedures on how the inspections shall be carried
out
• — Ability to explain how to ensure reliable detection of defects and
damages
• — Understanding of the purpose of the "enhanced survey
programme".

9. Inspections
Preparation
• Interpret previous reports on identified problems (including notices
with reference to sister vessels)
• Determine critical areas to inspect
• Explain the factors that increase the quality and efficiency of
inspections
• Give examples of reasons for cleaning prior to inspections
• Give examples of substances that can be removed by cleaning
• Assess if area to be inspected is cleaned to an acceptable standards
• Determine means of access, considering location and criticality of
area

10. Buckling & Indents
• Describe the difference between the loads causing buckling
and indents
• Identify which defect is most critical, buckling or indents
• Identify the most critical areas for buckling (general and
ship type specific)
• Identify the most critical areas for indents (general and ship
type specific)
• Give examples of events causing indents
• Recognise buckling
• Recognise indents
• Distinguish between buckling and indents I

11. Fatigue cracks
• Describe how a fatigue crack occurs
• Identify what loads are causing fatigue damages
• Recognise fatigue cracks
• Explain the importance of expanding the inspection if a
fatigue crack is found in one detail of many
• Describe the growth rate of a fatigue crack
• Identify the most critical areas for fatigue cracks
(general and ship type specific)
• Identify possible consequences (on structure) due to
fatigue cracks

12. Coating and Corrosion
• Name types of coating break down
• Categorise what to look for during coating inspections
• Assess coating breakdown and its severity (different grades – IACS)
• Explain triggers for corrosion (rate, factors)
• Identify possible consequences of corrosion
• Identify the most critical areas for corrosion (general and ship type
specific)
• Distinguish between the two principles for corrosion protection
(coating and anodes)
• Identify the characteristics of the following types of corrosion:
general corrosion, local corrosion, pitting corrosion, edge
• corrosion, grooving and galvanic corrosion

13. Documenting- Reporting
• Describe the elements for which the condition should be reported
• List different types of structural defects
• List items to be reported for cracks
• List important factors when reporting fatigue cracks
• List items to be reported for indents
• List items to be reported for buckles
• List items to be reported for corrosion
• Explain the importance of reporting exact observations
• Give examples of what the report will be used for (maintenance planning, court
cases, fleet and vessel condition monitoring,specification of repairs)
• Explain why pictures should be taken close-up as well as from some distance and
labelled
• Explain why copies of drawings should be used in reports
• Formulate identified problems encountered during an inspection, with reference
to hull damage, structural damages and coating / corrosion problems
• I
• 3.1.13 Explain the reporting route for identified problems

17. Coating

18. Coating

38. Corrosion

44. • The ballast tank Performance Standards for
Protective Coatings (PSPC) is now incorporated in
SOLAS and standards for oil tank coatings are
being finalized.
• These regulations also require the shipowners to
maintain a Coating Technical Files (CTF) to record
details of the coating system and its
maintenance.
• This file will be subject to regular audit by Class.