Home NI615 Buckling assessment of plated structures This Guidance Note contains the strength criteria for buckling of plates and ultimate strength of local supporting members, primary supporting members and other hull structures such as pillars, corrugated bulkheads and brackets. Reference Title Edition NI615 R03 Buckling assessment of plated structures Jan 2020 check related documents: NR467 Rules for the classification of steel ships NR445 Rules for the classification of offshore units Check other Bureau Veritas rules and guidelines.