Section 3 Machinery arrangement

Clasification Society 2024 - Version 9.40

Clasifications Register Rules and Regulations - Rules for the Classification of Stern First Ice Class Ships, July 2022 - Chapter 4 Main and Auxiliary Machinery - Section 3 Machinery arrangement

Section 3 Machinery arrangement

3.1 General

3.1.1 The positioning and structure of sea inlets and connections are to be specially considered with regard to the ingress and impact of ice during stern first mode.

3.1.2 Provision is also to be made for access to the sea chest to enable freeing of ice by both mechanical and steam hose. See the Rules for the Winterisation of Ships, July 2022 and IMO Guidelines on Design and Construction of Sea Inlets under Slush Ice Conditions MSC/Circular.504 – Guidance on Design and Construction of Sea Inlets Under Slush Ice Conditions – (28 April 1989).

3.1.3 De-icing of ballast tank suctions may need to be considered, depending on the anticipated operational profile.

3.1.4 The emergency fire pump is to be arranged to allow ice-free suction in both bow first and stern first modes.

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