(For bulk carriers & oil tankers)
- Survey planning
- Document file onboard
- Improved procedures for thickness measurement
- Harmonization between DD & renewal surveys
- Extended intermediate surveys
- Possible annual examination of tank/spacesphase out of CHS
Close up examination – details within inspection range
Overall survey – report overall condition of space /structure & determine extent of additional close up surveys
Suspect areas – prone to rapid wastage
Critical areas – vulnerable to substantial corrosion, buckling / fatigue cracks
Substantial corrosion – wastage is in excess of 75% of allowable corrosion margins but within acceptable limits
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