Sections of shafting outside the hull are usually supported by which bearing?

Sections of shafting outside the hull are usually supported by which bearing?

• A. Strut bearing
• B. Stern tube bearing
• C. Journal bearing
• D. Bushing

Answer: (A)

When the propeller shaft section is outside the hull, it is supported by strut bearings. These bearings sit in the external struts attached to the hull and carry the radial load of the shaft in the water, keeping the shaft properly aligned and rotating smoothly. This is distinct from stern tube bearings, which support the shaft as it passes through the stern tube inside the hull. Journal bearings are a general bearing type used in various housings, and bushings are a generic term not specifically identifying the external shaft support arrangement.

When the propeller shaft section is outside the hull, it is supported by strut bearings. These bearings sit in the external struts attached to the hull and carry the radial load of the shaft in the water, keeping the shaft properly aligned and rotating smoothly. This is distinct from stern tube bearings, which support the shaft as it passes through the stern tube inside the hull. Journal bearings are a general bearing type used in various housings, and bushings are a generic term not specifically identifying the external shaft support arrangement.