Section 1 Navigation equipment
Clasification Society 2024 - Version 9.40
Clasifications Register Rules and Regulations - Rules for the Classification of Stern First Ice Class Ships, July 2022 - Chapter 5 Control and Electrical Systems - Section 1 Navigation equipment

Section 1 Navigation equipment

1.1 Bridge layout

1.1.1 A stern facing bridge is required for any ship intending to operate stern first in ice for extended periods of operation. A stern facing bridge is defined as a bridge giving a clear view over the stern from the main steering position.

1.1.2 Workstations are to be provided that permit both bow first and stern first navigation. Alternatively, one workstation may be arranged with access to those controls and instrumentation necessary, relevant to controlling the ship’s course for both bow first and stern first operation.

1.1.3 The workstations described in Ch 5, 1.1 Bridge layout 1.1.2 are to be equipped with all instrumentation and controls necessary for navigation of the ship, as listed in Pt 7, Ch 9 Navigational Arrangements and Integrated Bridge Systems of the Rules for Ships.

1.1.4 The positioning of funnels is, as far as is practicable, not to obscure the view from the stern facing work station, or the main steering position when operating stern first.

1.1.5 The combination of bridge wings and forward facing and stern facing workstations should enable a suitably complete view around the ship for bow first and stern first navigation.

1.2 Changeover of control

1.2.1 Where multiple workstations are provided, provision is to be made to indicate which workstation is in control.

1.2.2 Clear indication is to be given to show which bridge systems are in control for bow and stern first operation.

1.3 Navigation lights

1.3.1 Two sets of navigation lights are to be fitted for bow first and stern first navigation.

1.4 Searchlights

1.4.1 Searchlights are to be provided to enable effective independent navigation in ice at night. The searchlights provided should be available for bow first and stern first operation.

1.5 Radars

1.5.1 For stern first mode, forward facing radars are to be provided or radars with no shadow zone.


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