🔍 Key Concepts

• Primary structural member of a diesel engine that supports major components • Difference between oil collection components and main load-bearing structure • How forces from combustion are transferred through pistons, connecting rods, and crankshaft into the engine structure

💭 Think About

• Which part of the engine actually carries and distributes the mechanical loads from the crankshaft into the ship’s foundation? • Which option is mainly for fluid (oil) storage versus structural strength? • Which term is most often associated with the structure that ties together the main bearings that support the crankshaft?

✅ Before You Answer

• Identify which choice supports the main bearings and crankshaft • Eliminate any parts whose primary purpose is oil storage rather than structural load carrying • Ask: which of these is usually bolted to the engine seating or tank top to transmit loads to the hull?