Exam Question

(a) Two-Stroke, Single-Acting Crosshead-Type Slow-Speed Engine
A two-stroke, single-acting crosshead-type slow-speed engine is an ideal choice for large vessels that require significant propulsive power and operate primarily in open seas. 🚢 This includes ships with a huge tonnage and deep draft, such as large tankers, bulk carriers, and container ships .
A key advantage of this engine type is its power output. Since it's a two-stroke engine, it delivers a power stroke with every revolution, providing consistent and immense power to the propeller. This high power-to-weight ratio allows the vessel to carry more cargo. While its maneuverability is less than other engine types, this isn't a major issue for large ships that spend most of their time on long voyages. The engine is also known for its high efficiency and reliability . Furthermore, starting and reversing are relatively easy , making it a convenient choice for a vessel's main propulsion system.
(b) Four-Stroke, Single-Acting Engine with Reverse/Reduction Gear