There is a new Ship Safety Bulletin under review outlining the policy for application of the IACS Polar Rules. IACS PC International Association of Classification Societies Ltd. Polar Class IACS UR IACS Unified Requirements,where UR I denotes Polar Class IMO International Maritime Organization LIWL Lower Ice Waterline LOA Length over all MS Mild Steel NSR Northern Sea Route RS Russian Maritime Register of Shipping UIWL Upper Ice Waterline . Edit Now. Notes Reference is made to the IMO Guidelines for Ships The IACS DESIGN LOADS parameters shown in Table 2 were common inputs into PC Table 4 outlines the IACS URI design loads by polar class for Design & Check for all fourteen grillages: these grillages. Private & Confidential. Post jobs, find pros, and collaborate commission-free in our professional marketplace. At DEKC Maritime, we have broad experience working with the different regulatory codes governing extreme-cold maritime engineering, such as the IMO Polar Code, the IACS Polar Class rules, and the Russian RS regulations. 1 Oct 2007). The International Association of Classification Societies published a set of Unified Requirements for Polar Class Ships to complement the IMO Guidelines for Ships Operating in Arctic Ice Covered Waters. The selection of ice class is based on the operating area in the Russian Arctic, time of year, ice conditions, operating tactics, and whether the vessel operates under icebreaker escort or independently. Introduction 1.1. Protection of underwater sensors/transducers ! The International Association of Classification Societies (IACS) Unified Requirements harmonize the rules to be used in the construction of all ships meant to operate in ice-covered waters, including areas where multi-year ice may be present. I1.1.1 The Unified Requirements for Polar Class ships apply to ships constructed of steel and intended for independent navigation in ice-infested polar waters. I1.1 Application . 2006/Rev.2 2016 I1 (cont) Polar Class Descriptions and Application . Polar Class refers to the ice class assigned to a ship by a classification society based on the Unified Requirements for Polar Class Ships developed by the International Association of Classification Societies. Receive & Display Ice Conditions ! IACS Ad-Hoc Group on Polar Class Ships Prepared by: Evgeny Appolonov Krylov Shipbuilding Research Institute April 2000 . IACS UR Polar Ships - Background Notes - Longitudinal Strength pg. for Polar Class Ships (IACS-UR-I3), 2 006 . 1 1. 3 Table 1 Ice class parameters and Longitudinal Strength Class factor. The selection of ice class is based on the operating area in the Russian Arctic, time of year, ice conditions, operating tactics, and whether the vessel operates under icebreaker escort or independently. I3-1 IACS Req. The Finnish Ice Class Rules (FSICR) are considered an industry standard for ships navigating in sea areas where there is only first-year ice. Polar class is an additional class notation created in accordance to IACS UR I with the main focus to: define different types of navigation in ice-infested waters; define the correct scantling and materials of hull structures and relevant appendices; define machinery systems’ design necessary to operate in different ice conditions. Marine Technical Services Marine. Class V [m/s] p 1 [Mpa] h_ice [m] sig_f [MPa] Longitudinal Strength Class Factor (CF L) 1 5.70 6.00 7.0 1.40 7.46 2 4.40 4.20 6.0 1.30 5.46 3 3.50 3.20 5.0 1.20 4.17 4 2.75 2.45 4.0 1.10 3.15 These ice classes can be assigned in parallel with the Finnish-Swedish ice class and/or the IACS Polar Class, provided the vessel complies with all applicable rules. Application 1. The IACS URs for Polar Class Ships were developed as a result of international efforts originating at IMO to harmonize the many systems of requirements for polar ice-classed vessels. After that, the International Association of Classification Society (IACS) issued the Unified Requirements (URs) for Polar Class Ships in 2006 in order to supplement the provisions regarding a hull structure and a machinery mentioned in the IMO Guidance. Societies (IACS) have adopted the Finnish-Swedish ice class rules and incorporated them in their own regulations on the classification of ships. Various Classification Societies have had their respective requirements for Polar Class ships. This will effectively unify the ice classes for all IACS member societies. Ice class. This leads many designers and classification societies to oversize the web frames using elastic design principles. Depending on their classification, vessels can operate during certain times of the year when the right ice conditions are present. Her ice class, Polar Class 4, is intended for vessels operating year-round in thick first-year ice which may include old ice inclusions. For Hire . Seven Polar Classes are defined in the rules, ranging from PC 1 for year-round operation in all polar waters to PC 7 for summer and autumn operation in thin first-year ice. 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