🔍 Key Concepts

• Difference between radial bearings (supporting the shaft weight) and thrust bearings (taking axial propeller thrust) in a propulsion shaft line • Typical construction features of line shaft (intermediate shaft) bearings on ships (mounting style, lining material, lubrication method) • Common design of thrust bearings such as Kingsbury or pivoted-shoe types

💭 Think About

• First, decide: does a line shaft bearing primarily carry radial load, thrust load, or both? Eliminate any option that is clearly a thrust‑only design. • Look for clues in each choice that suggest it is used for continuous, steady radial support of a long shaft in a tunnel (think: pedestal bearing along the shaft line). • Consider which description best matches a bearing that can self-align with small shaft misalignments and is simple to lubricate over long periods.

✅ Before You Answer

• Identify which option clearly describes a thrust bearing (axial load, pivoted shoes/segments) and set that aside. • Look for words like sleeve, babbitt-faced, and ring-oiled and think about how those relate to common line shaft pedestal bearings. • Check which design would best handle slight misalignment in a long shaft (hint: a certain feature in one option allows the bearing shell to tilt slightly).