While the DEEP DRILLER is operating loaded as shown in Sample Load Form #4 (Drilling), casing is accidentally dropped over the port side. If the port forward inclination is slowly increasing, which tank is probably damaged?

Correct Answer: Option B — 1P

A slowly increasing port forward inclination indicates progressive loss of buoyancy or unscheduled weight addition forward and to port. Tank 1P, located in the port forward column/lower hull, is the direct source of flooding causing this specific list.