External openings
Clasification Society 2024 - Version 9.40
Statutory Documents - IMO Publications and Documents - International Codes - 1989 MODU Code – Code for the Construction and Equipment of Mobile Offshore Drilling Units, 1989 – Resolution A.649(16) - Chapter 3 – Subdivision, Stability and Freeboard - 3.6 Watertight integrity - External openings

External openings

  3.6.6 All downflooding openings the lower edge of which is submerged when the unit is inclined to the first intercept between the righting moment and wind heeling moment curves in any intact or damaged condition should be fitted with a suitable watertight closing appliance, such as closely spaced bolted covers.

  3.6.7 Where flooding of chain lockers or other buoyant volumes may occur, the openings to these spaces should be considered as downflooding points.

Parent topic: 3.6 Watertight integrity
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