Question 270General Subjects - QMED

The correct answer is D) Main circulating system. The main circulating system aboard a ship typically uses a propeller-type pump to circulate the water through the main condensers and auxiliary equipment. This type of pump is well-suited for the high flow rates and relatively low pressure requirements of the main circulating system. The other options are not as likely to use a propeller-type pump. Fuel oil service booster systems and fluid power transmission systems often utilize positive displacement pumps, while steering gear systems may use gear pumps or vane-type pumps to meet their specific pressure and flow demands.