Foreword (1 September 2021)
This Guide provides requirements for the installation of, and the information to be provided by, Ice Loads
Monitoring Systems fitted on ice-classed ABS vessels. These systems are intended as an aid to the Master
and navigating officers when a vessel is operating in ice infested waters so that appropriate action can be
taken to minimize the likelihood of the vessel sustaining structural damage from interaction with the ice.
The Ice Loads Monitoring Systems specified by this Guide extend from basic monitoring systems to
sophisticated, integrated systems, the selection of which is left to the Owner. The information provided in
the Guide is intended to assist the Owner in selecting the most appropriate system for a vessel based on the
vessel’s probable operating parameters.
The Guide describes the Ice Loads Monitoring process and the procedures for collecting, recording,
processing, evaluating, and presenting the data in a manner that permits the Master and or navigating
officer to better measure vessel performance in ice and determine if remedial action should be taken. The
monitoring systems specified in the Guide can assist in identifying when the vessel is operating in ice in a
manner that could lead to structural damage or failure by providing early warning to the navigator when
the performance parameters relating to vessel strength are approaching the preset allowable levels.
It is emphasized that the scope of the ice loads monitoring system selected for a specific vessel, the nature
of the display and the form and aims of data processing are decisions that should be made by the vessel’s
Owner in conjunction with the system supplier as appropriate. If requested, ABS is able to provide
technical assistance to an Owner considering installing an ice loads monitoring system based upon the
information contained in this Guide.
ABS considers that it would be of mutual benefit to ABS and the Owner of an ABS-classed vessel that is
fitted with an ice loads monitoring system for the recorded in-service data to be made available to ABS for
evaluation for the purpose of further refining these requirements and improving safety, in accordance with
the ABS mission.
An ABS-classed vessel that is fitted with an ice loads monitoring system that complies with the
requirements of this Guide may, at the request of the Owner, be assigned the appropriate notation for entry
in the ABS Record.
The requirements of this Guide are applicable to all types and sizes of ice-class vessels. The requirements
are applicable both to new construction and to the retrofitting of an approved ice loads monitoring system
to existing vessels.
The September 2021 edition replaces the requirements for surveys after construction with references to
Section 7-9-44 of the ABS Rules for Survey After Construction (Part 7).
The effective date of this Guide is the first day of the month of publication.
ABS welcomes comments and suggestions for improvement of this Guide. Comments or suggestions can
be sent electronically to rsd@eagle.org.
ABS GUIDE FOR ICE LOADS MONITORING SYSTEMS • 2021 ii
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