Question 1879 Deck Safety

The correct answer is D) floors. Aboard ship, vertical flat plates running transversely and connecting the vertical keel to the margin plates are called floors. Floors are structural members that run perpendicular to the keel and serve to strengthen the hull. They are an integral part of a ship's framing system, providing support and transferring loads from the sides of the hull to the keel. The other answer choices are incorrect because: Intercostals are longitudinal structural members, stringers are longitudinal stiffeners, and girders are major transverse supporting members, but they are not the specific term for the vertical flat plates connecting the keel to the margin plates, which are called floors.