Raskään

Raskään is a Finnish term that translates to "heavy turn" or "difficult turn" and is primarily used in the context of maritime navigation. It refers to a maneuver where a vessel makes a wide and slow turn, typically to avoid a hazard, change course significantly, or navigate a confined space. This type of turn is characterized by a large turning circle, meaning the ship covers a considerable distance and occupies a substantial area of water while executing the maneuver.

Factors influencing the need for a raskään include the ship's size, speed, and maneuverability. Larger vessels generally have a larger turning radius and require more time and space to change direction. The prevailing environmental conditions, such as wind, current, and sea state, can also necessitate a raskään to maintain control and safety. Mariners must carefully consider these elements when planning and executing such a turn to prevent collisions or running aground.

In practical terms, a raskään involves gradually reducing speed and applying rudder to initiate the turn. The helmsman must continuously monitor the ship's progress and the surrounding environment, making adjustments as needed. Effective communication between the bridge team, including the officer of the watch and the helmsman, is crucial during a raskään to ensure the maneuver is performed safely and efficiently. The term emphasizes the deliberate and potentially challenging nature of a large course alteration for a vessel.