You are investigating a watertight door, how do you open it?

• A. Latch Side First, Top to Bottom
• B. Hinge Side First, Bottom to Top
• C. Push from the Center
• D. Open from the Outside

Answer: (B)

The key idea is to open a watertight door in a controlled, pivoted manner so you stay in control against any water pressure. Start with the hinge side so the door can pivot on its fixed pivots rather than being forced open from the latch side. Then release the latches from bottom to top. This gradual sequence lets the door swing open smoothly and helps keep the seal intact as you finish with the top latch. Opening from the latch side, pushing on the center, or opening from the outside would place you at risk and make the door harder to manage under pressure.