The Use of Large Tankers in Seasonal First-Year Ice and Severe Sub-Zero Conditions.

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Published Date

November 2010

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The Use of Large Tankers in Seasonal First-Year Ice and Severe Sub-Zero Conditions.

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Independent ice navigation and the icebreaker-escorted navigation of large tankers are concepts that may be relatively new to many tanker owners and charterers. This publication provides guidance to chartering and vetting groups on the safe operation of tankers in areas affected by seasonal first-year ice. It is primarily aimed at the use of low, or no, ice class tankers, from 50,000 tonnes deadweight upwards, likely to encounter first-year ice.

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With the changes that have occurred in the Russian Federation, the tanker market has experienced an increase in the export of crude oil by large tankers from Baltic terminals impacted by the potential for winter ice navigation. This trend has continued elsewhere in the world as crude export terminals have been established or are planned in other ice navigation areas, such as the Barents Sea, White Sea and in proximity to Sakhalin Island (Eastern Russian Federation).

Some sectors of the industry have been used to dealing with the more traditional high ice class, smaller tankers designed specifically for escorted or unescorted ice transit. What is relatively new to the industry is the increase in demand for larger-sized crude tankers of low, or no, ice class to trade out of an increasing number of ports subjected to first-year ice formation.

Areas commonly affected by first-year ice include the Baltic Sea, White Sea, Barents Sea, the Eastern coast of Canada, Cook Inlet and in the proximity of Sakhalin Island in the Eastern Russian Federation.

The guidance is primarily aimed at the use of low, or no, ice class tankers, from 50,000 tonnes deadweight upwards, likely to encounter first-year ice. The document does not address established or specialised ice trades utilising high ice class tonnage.

It is recommended that charterers limit the use of low, or no, ice class ships in ice covered areas and nonwinterised ships during severe sub-zero temperature conditions. For the purpose of this document, ‘severe sub-zero’ conditions are defined as forecasted daily mean ambient temperatures below -15°C.

Section1 Ice Navigation Risk Assessment
Section 2 Vetting for Ice Navigation
Section 3 Commentary on Ice Class Notations
Section 4 Engine Power
Section 5 The Winterisation of Ships
5.1 Cargo and Ballast Systems
5.2 Deck
5.3 Engine Rooms, Machinery and Systems
5.4 Safety and Life Saving Equipment
5.5 Fire-Fighting Systems and Equipment
5.6 Pollution Prevention and Response
5.7 Ice Accretion and Snow Accumulation on Ships
Section 6 Navigation of Large Tankers in Ice
6.1 Icebreaker Escort of Large Tankers
6.2 Tug Support in Ice
6.2.1 Arrival at Jetty
6.2.2 Departure from Jetty
6.3 Operations at Offshore Terminals
6.3.1 Approach
6.3.2 Operations Alongside
6.3.3 Departure
Section 7 Oil Spill Response in Ice
Section 8 Proficiency of Ship’s Crew
A Some Useful Contact Websites
B Some Issues to be Considered when Conducting a Hazard Risk Assessment of Operations in Ice
C Ice Navigation Control Services

OCIMF was formed in April 1970 in response to the growing public concern about marine pollution, particularly by oil, after the Torrey Canyon incident in 1967. In the early 1970s, a variety of anti-pollution initiatives were starting to emerge nationally, regionally and internationally, but with little coordination. Through OCIMF, the oil industry was able to play a stronger, coordinating role in response to these initiatives, making its professional expertise widely available through cooperation with governments and intergovernmental bodies.

OCIMF was granted consultative status at the IMO in 1971 and continues to present oil industry views at IMO meetings. Since then, its role has broadened to take account the changing maritime activities of its membership. Its remit now covers tankers, barges, offshore support vessels and terminals and its advice extends to issues like shipping in ice and large-scale piracy, which rarely troubled the oil industry when OCIMF was first created in the 1970s.

The current membership of OCIMF comprises 112 companies worldwide.

Today, OCIMF is widely recognised as the voice of the oil industry providing expertise in the safe and environmentally responsible transport and handling of hydrocarbons in ships and terminals and setting standards for continuous improvement. Membership is extensive and includes every oil major in the world along with the majority of National Oil Companies.

OCIMF has much to be proud of. Not only has it contributed to a substantial quantity of regulation at the IMO aimed at improving the safety of tankers and protecting the environment, but it has introduced important new guidance on pressing current issues such as piracy and Arctic shipping. With the process of introducing new Internationally-accepted regulation necessarily slow as it crosses many individual countries and jurisdictions, OCIMF is in the unique position of being able to leverage the expertise of its membership to press ahead with much needed guidance on important industry issues. This provides the means to improve practices in the membership and in the wider industry, and serves as a valuable reference for developing regulation.

Title: The Use of Large Tankers in Seasonal First-Year Ice and Severe Sub-Zero Conditions.
Number of Pages: 72
Product Code: WS1269K
ISBN: ISBN 13: 978-1-85609-429-0 (9781856094290), ISBN 10: 1-85609-429-4 (1856094294)
Published Date: November 2010
Binding Format: Hardback
Book Height: 300 mm
Book Width: 210 mm
Book Spine: 7 mm
Weight: 0.60 kg
Author: Oil Companies International Marine Forum

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