If a vessel has both upper and lower helm stations, how should the hydraulic systems be configured?

In a vessel equipped with both upper and lower helm stations, the configuration of the hydraulic systems is crucial for ensuring proper steering functionality and safety. Venting the hydraulic system at the upper helm station allows air to escape, helping to prevent the buildup of pressure that can occur due to temperature changes or fluid expansion. This is particularly important in open environments where temperature fluctuations or other environmental factors can affect the hydraulic fluid.

On the other hand, having the lower helm station sealed is essential because it typically resides in a more controlled environment, such as an enclosed area. Sealing this system helps to protect the hydraulic components from moisture and contaminants that could compromise performance and reliability.

By configuring the upper helm station to be vented and the lower helm station to be sealed, the system can function effectively across both operating positions while minimizing the risk of pressure or contamination issues. This configuration aligns with best practices that consider environmental exposure, system maintenance, and overall safety for the vessel's operation.