🔍 Key Concepts

• Watertight subdivision and how it limits flooding after hull damage • Difference between longitudinal strength members (like stringers/longitudinals) vs transverse bulkheads • How compartmentation affects a vessel’s ability to stay afloat after shell plating is punctured

💭 Think About

• If the side shell is punctured and one area floods, what structure would stop water from easily spreading along the length of the hull? • Which of these options actually creates separate enclosed spaces, versus just reinforcing the hull plating? • On a towing vessel, what feature is most directly related to limiting the extent of flooding rather than just strengthening the hull against bending?

✅ Before You Answer

• Identify which option provides watertight separation from deck to bottom and side to side • Check which members are mainly for strength and stiffness but do not by themselves prevent water from moving between spaces • Think about flooding boundaries: which choice forms a boundary that can fully contain water in one section?