According to the illustrated main and auxiliary diesel engine cooling water systems diagram, which of the following heat exchangers are connected directly in series with one another? Illustration MO-0129

Correct Answer: Option C — Lube oil cooler and jacket water cooler

Centralized marine cooling systems often arrange the main engine lube oil cooler and the main jacket water cooler sequentially in the seawater circuit to maximize heat rejection efficiency across dual-stage heat exchangers.