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Abs anchor guide Guide for the Optional Class Notation Deep Water Anchoring for Oil Tankers and Bulk Carriers DWA GUIDE FOR THE OPTIONAL CLASS NOTATION DEEP WATER ANCHORING FOR OIL TANKERS AND BULK CARRIERS DWA MAY American Bureau of Shipping Incorporated

Guide for the Optional Class Notation Deep Water Anchoring for Oil Tankers and Bulk Carriers DWA GUIDE FOR THE OPTIONAL CLASS NOTATION DEEP WATER ANCHORING FOR OIL TANKERS AND BULK CARRIERS DWA MAY American Bureau of Shipping Incorporated by Act of Legislature of the State of New York Copyright ? American Bureau of Shipping ABS Plaza Northchase Drive Houston TX USA CForeword Foreword In many instances the increase in the number and size of oil tankers and bulk carriers has out paced the ability of ports to provide sheltered anchorage locations for these vessels As a consequence there has been a growing need for owners operators and the vessel ? s crew to anchor these vessels outside a harbor or similar areas of sheltered water Noting the need to provide these same owners operators and vessel crews as well as designers and equipment providers with a guide to assess the adequacy of anchoring equipment ABS has in response to requests from our clients developed this Guide This Guide speci ?es the ABS requirements and criteria for obtaining the optional class notation Deep Water Anchoring DWA Included within this Guide are requirements detailing the anchor size chain length and size and windlass particulars considered necessary to withstand the environmental conditions that vessels anchoring outside a harbor or similar areas of sheltered water may be exposed to This Guide becomes e ?ective on the ?rst day of the month of publication We welcome your feedback Comments or suggestions can be sent electronically by email to rsd eagle org ii ABS GUIDE FOR THE OPTIONAL CLASS NOTATION DEEP WATER ANCHORING FOR OIL TANKERS BULK CARRIERS DWA CTable of Contents GUIDE FOR THE OPTIONAL CLASS NOTATION DEEP WATER ANCHORING FOR OIL TANKERS AND BULK CARRIERS DWA CONTENTS SECTION Anchoring Mooring and Equipment General Scope and Application Basis of Notation Deep Water Equipment Number Anchors Anchor Types Anchor Chain Chain Type Chain Size Chain Length Tests Environmental Loads General Windlass Support Structure and Cable Stopper General Support Structure Vessel Support Structure General Scantlings Chain Lockers General Chain Pipe opening Hawse Pipes TABLE Equipment for Self-propelled Ocean-going Oil Tankers and Bulk Carriers FIGURE E ?ective Heights of Deck Houses FIGURE Direction of Forces and Weight FIGURE Sign Convention FIGURE A FIGURE B ABS GUIDE FOR THE OPTIONAL CLASS NOTATION DEEP WATER ANCHORING FOR OIL TANKERS BULK CARRIERS DWA iii CSECTION Anchor Windlass General Application Standards of Compliance Plans and Particulars Materials and Fabrication Materials Welded Fabrication Design Mechanical Design Hydraulic Systems Electrical Systems Protection of mechanical components Coupling Shop Inspection and Testing Onboard Tests SECTION Surveys after Construction Anchoring System Annual Surveys Anchoring System Special Periodical Surveys iv ABS GUIDE FOR THE OPTIONAL CLASS NOTATION DEEP WATER ANCHORING FOR OIL TANKERS BULK CARRIERS DWA CSection Anchoring Mooring and Equipment S E C T I O N Anchoring Mooring and Equipment General Scope and Application The objective of this Guide is to provide a standard to assess the adequacy of the anchoring arrangements and equipment for vessels