Question 314General Subjects - 1st Asst/Chief

The correct answer is B. When transitioning from maneuvering speed to full sea speed on a slow-speed diesel-powered vessel with a direct-drive fixed-pitch propeller, the engine should be accelerated gradually, but should transition through any critical speeds without lingering. This is because lingering at critical speeds can lead to excessive vibrations and potential damage to the propulsion system. However, accelerating too quickly can also be problematic, as it may put excessive stress on the engine and transmission. Therefore, the proper approach is to gradually increase the engine speed while minimizing the time spent at critical speeds. The other options are incorrect because A does not account for the need to avoid critical speeds, C suggests lingering at critical speeds which can be harmful, and D recommends accelerating too quickly, which can also be problematic.