Main propulsion diesel engines having a bore...

Main propulsion diesel engines having a bore...

Question 1 of 270705eccefa1bacbc34ba4d47456

Main propulsion diesel engines having a bore exceeding 300 mm are to have at least __________.

Question 1 of 27070

Q

Main propulsion diesel engines having a bore exceeding 300 mm are to have at least __________.

🔍 Key Concepts

• SOLAS requirements for large diesel engine crankcase safety • Purpose of crankcase explosion relief on medium/slow-speed diesels • Which items in the options are about starting ability vs safety protection

💭 Think About

• Among the choices, which ones relate to protecting the engine and crew if a crankcase explosion occurs? • For engines with larger bore sizes, what hazard increases inside the crankcase, and what type of fitting is specifically designed to relieve that? • Look at which options are operational conveniences (like redundancy) and which are mandatory safety features tied to engine size/bore.

✅ Before You Answer

• Verify in SOLAS II-1 / class rules what is required when cylinder bore exceeds 300 mm • Check which device must be fitted at each main crank throw on large-bore engines • Confirm which options describe starting systems versus crankcase relief/safety devices before selecting an answer.