🔍 Key Concepts

• Difference between radial load and axial (thrust) load in a shafting system • How propeller thrust is carried from the propeller to the ship’s hull • Role of a thrust bearing versus ordinary line shaft bearings

💭 Think About

• When the propeller pushes water astern to move the ship ahead, in what direction is the force along the shaft, and where must that force ultimately end up? • Which component in the shaft line is specifically designed to take axial load and pass it into the ship’s structure, rather than just supporting the shaft’s weight? • Look at each option and ask: does this describe handling axial thrust from the propeller, or something else like vibration or crankshaft alignment?

✅ Before You Answer

• Identify which choice clearly involves axial (forward‑aft) thrust rather than vibration or radial support • Check which component would logically connect the engine/shaft system to the ship’s hull or foundation to carry propulsion thrust • Eliminate any option that suggests blocking thrust from reaching the hull, instead of safely transmitting it into the hull structure