Which of the following terms is associated with steering mechanisms aboard a ship?

The term associated with steering mechanisms aboard a ship is indeed "Trick Wheel." A trick wheel, also known as a steering wheel or ship's wheel, is the device used by the helmsman to control the direction of the vessel. It is directly connected to the ship's steering system, enabling the operator to maneuver the ship by altering the angle of the rudder.

In the context of steering, the trick wheel plays a crucial role. When turned, it receives input through the ship's steering gear, which then translates this command into movement of the rudder, allowing the vessel to change its heading. Steering is fundamental to the safe and efficient navigation of a ship, making the trick wheel an essential component of maritime operation.

The other terms listed do not pertain to steering mechanisms. A ballast tank is used for stability and buoyancy, a displacement pump is a type of pump that moves fluids, and a deck winch is used for handling lines and anchors. Each of these plays significant roles in naval operations but is not related to the steering of the vessel.