Question 1585 Deck General

The correct answer is C) Mechanical seals. Mechanical seals are used on modern tankers with separate pump rooms to minimize cargo pump shaft leakage. Mechanical seals are a type of specialized shaft seal that forms a tight, reliable seal around the rotating shaft to prevent leakage of the cargo. This is the most effective method for preventing shaft leakage compared to other options like stuffing box glands or slinger rings, which are less reliable at maintaining a complete seal. The other options are less suitable for this application. Stuffing box glands can wear over time and allow some leakage, while slinger rings are mainly used to throw off drips rather than form a full seal. Shaft sleeves may help protect the shaft but do not directly seal the leak path.