Section 9 Ventilators
Clasification Society 2024 - Version 9.40
Clasifications Register Rules and Regulations - Rules and Regulations for the Classification of Inland Waterways Ships, July 2022 - Part 3 Ship Structures (General) - Chapter 11 Closing Arrangements to Openings in Shell and Deck, Ventilators, Air Pipes, Sounding Pipes and Discharges - Section 9 Ventilators

Section 9 Ventilators

Parent topic: Chapter 11 Closing Arrangements to Openings in Shell and Deck, Ventilators, Air Pipes, Sounding Pipes and Discharges

9.1 General

9.1.1 The lower edge of ventilator openings on the open deck is to have a height of at least 500 mm above the load waterline, but not less than 100 mm above the deck, and are to be protected against ingress of water. When, due to service conditions, the height of the ventilator coaming is less than 500 mm above the load waterline, the hoods are to be provided with weathertight closing arrangements.

9.1.2 Special requirements for ventilation arrangements in certain types of ships are given in the relevant ship type Chapter in Pt 4 Ship Structures (Ship Types).

9.2 Construction

9.2.1 The scantlings of exposed ventilator trunks and coamings are to be equivalent to scantlings of deck-houses in the same position. Ventilator trunks leading through cargo spaces or other areas where mechanical damage is likely to occur, are to be protected or additionally stiffened.

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