What effect is increased when coming alongside another vessel?

When coming alongside another vessel, the Venturi effect is particularly relevant. This phenomenon occurs when a fluid, such as water, moves through a constricted section of flow, resulting in an increase in velocity and a decrease in pressure. In the context of two vessels coming alongside each other, the space between them can constrict the flow of water, leading to changes in pressure that can affect stability and maneuverability.

This is especially important for vessels operating in close quarters, as the pressure changes can impact how they interact with each other and the surrounding water. Understanding the Venturi effect helps mariners navigate safely and maintain control when positioning themselves next to another vessel.

The other effects listed do not apply as directly to the scenario of vessels coming alongside, making the Venturi effect the most significant consideration in this case.