Foreword

These Rules enter into force on 1st July 2018 and supersede the following Rules:

Common Structural Rules for Bulk Carriers and Oil Tankers, January 2017

These Common Structural Rules consist of two parts. Part One provides requirements common to both Double Hull Oil Tankers and Bulk Carriers and Part Two provides additional requirements applied to either Double Hull Oil Tankers or Bulk Carriers.

Summary of changes from the 01 JAN 2017 Rules

	Amendment Type / No.	Adoption Date	Rule Version Date	Effective Date
1	Corrigenda 1	27 APR 2017	01 JAN 2017	01 JUL 2017
2	Urgent Rule Change Notice 1	10 JAN 2018	01 JAN 2017	01 JUL 2018

Note: Full revision history for Common Structural Rules is available on IACS website, including all previous RCNs and associated TBs.

Guideline of RCN Label

1. RCN (Rule Change Notice) label is used to identify the rule change made since last rule version with the format of “RCN {Number} to {Rule Version Date}”, e.g. RCN 1 to 01 JAN 2017.

2. For corrigenda update, the same format will be followed, e.g. CORR 1 to 01 JAN 2017.

3. Modification and addition of rule texts:

RCN label is inserted at the end of modified contents.

4. Modification and addition of titles, figures and tables:

RCN label is inserted at the end of modified contents.

5. Deletion of rule texts and titles:

Replace contents by the word “DELETED”.
RCN label is inserted at the end of the word “DELETED”.

6. Deletion of Table:

Replace contents of Table by the word “DELETED” (only shown first row).
RCN label is inserted at the second row of Table.

7. Deletion of Figure:

Replace Figure by a generic graphic marked “DELETED”.
RCN label is inserted under the generic graphic.