Hydraulic systems typically operated for intermittent service do not require the use of oil coolers and would include all of the following except _________?
• Difference between intermittent and continuous hydraulic system operation • Why oil coolers are needed in hydraulic systems (heat buildup from long or frequent operation) • Typical duty cycle of each listed system on a ship
• For each option, ask yourself: Is this system normally running only briefly now and then, or does it often operate for long periods or very frequently? • Which system, if used in its normal role, is more likely to generate sustained heat in the hydraulic oil because it must keep working to maintain or adjust force or position? • Think about which systems are only operated during specific evolutions (like arrival, departure, cargo ops) versus those that might be active much more of the time.
• For each choice, classify it as short, occasional operation or long/frequent operation in normal ship use. • Consider which one would most likely overheat hydraulic oil without a cooler under typical operating conditions. • Verify which systems must maintain continuous or near‑continuous hydraulic pressure or motion rather than simple one‑time movements.
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