Foreword In association with the introduction of the Common Structural Rules for Double Hull Oil Tankers and Bulk Carriers@ respectively@ on 1 April 2006@ Part 5 of the Rules for Building and Classing Steel Vessels@ 2007 was divided into three Sub-parts@ 5A@ 5B and 5C. Application ?C Oil Tankers The structural requirements in Part 5A of the Rules are applicable for double hull oil tankers of 150 m in length and upward@ with structural arrangements as specified in Part 5A@ Section 2. For oil tankers with structural arrangements not covered by Part 5A@ the requirements in Part 5C@ Chapters 1 or 2@ are to be complied with. Application ?C Bulk Carriers The structural requirements in Part 5B of the Rules are applicable for single side skin and double side skin bulk carriers of 90m in length and upward@ with structural arrangements as specified in Part 5B@ Chapter 1@ Section 1. For vessels intended to carry ore or bulk cargoes@ other than the single side skin or double side skin bulk carriers of 90 m in length and upward with structural arrangements as specified in Part 5B@ Chapter 1@ Section 1@ the requirements in Part 5C@ Chapters 3 or 4 are to be complied with. Application ?C ABS Construction Monitoring Program These compulsory requirements for CSR notation are specified in Part 5C@ Appendix 2. Application ?C Onboard Systems for Oil Tankers and Bulk Carriers The onboard systems for all tankers are to comply with the requirements of Part 5C@ Chapter 1@ Section 7@ and for all bulk carriers are to comply with the requirements of Part 5C@ Chapter 3@ Section 7 of the Rules.