(4) Whenever the ship machinery operation may be affected by weather or other condition changes, such as shallow water approach, concentration of marine life or seaweed, ice in water, or change of trim or draft due to ballasting shifting?

(4) 何时船舶机械操作可能受到天气或其他条件变化的影响，例如浅水接近、海洋生物或海藻集中、水中结冰、或因压载转移而导致纵倾或吃水变化？