What could be the Ship to ship interaction in close proximity a shallow water area?

When ships operate in close proximity in shallow water areas, several types of interactions can occur, including:

Squat: Ships displace water as they move through it, creating a depression in the water surface known as squat. In shallow water areas, squat can be significant and can reduce the depth of water under the ship's hull, increasing the risk of grounding. The squat effect is more pronounced for larger ships and ships with a high block coefficient.

Interaction between hulls and propellers: When ships pass close to each other in shallow water, the interaction between their hulls and propellers can generate forces that affect their manoeuvrability and stability. These forces can include hydrodynamic forces, such as suction and repulsion effects, as well as mechanical forces, such as collisions between ship hulls and propellers.

Bank effects: When a ship moves in shallow water, it can create a bank or mound of water on one side of the ship, known as the bank effect. This bank effect can alter the water flow around the ship and affect its manoeuvrability. The bank effect is more pronounced in narrow channels and restricted waterways.

Wave interaction: When two or more ships operate close to each other in shallow water, their wakes can interact with each other, creating complex wave patterns. These interactions can result in increased wave heights and reduced wave celerity, which can affect the manoeuvrability and safety of the ships.

Ground effect: In very shallow water, ships may experience the ground effect, which is a phenomenon where the water flow under the ship's hull is restricted by the proximity of the seabed. The ground effect can significantly alter the ship's resistance, manoeuvrability, and stability.

To ensure the safe operation of ships in close proximity in shallow water areas, it is important to consider these potential interactions and take appropriate measures to mitigate any risks. This may involve adjusting ship speed, maintaining adequate under-keel clearance, and employing proper manoeuvring techniques.