Question 4682 Deck General

The correct answer is D) beams. The deck plating on a MODU (Mobile Offshore Drilling Unit) is supported primarily by deck longitudinals and deck beams. Deck beams are the primary structural members that span the width of the deck, transferring the load from the deck plating to the deck longitudinals and supporting the overall structure. The other options are incorrect because: A) Girders are larger, heavier structural members that run longitudinally, not transversely, to support the deck. B) Stanchions are vertical support columns, not the primary horizontal members supporting the deck. C) Frames are the transverse structural members in the hull, not the deck.