Maritime Knowledge Base
Browse questions and answers across marine machinery, merchant navy careers, shipboard operations and maritime glossary terms.
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Marine Machinery
Troubleshooting guides for pumps, boilers, purifiers, compressors and auxiliary systems.
Merchant Navy Careers
Questions about joining the merchant navy, exams, cadetships, ranks and sea-time.
Maritime Glossary
Plain-English definitions of shipping, engine-room, navigation and regulatory terms.
Shipboard Operations
Practical Q&A for watchkeeping, safety, maintenance routines and onboard documentation.
Results for "Starting air"
How does a marine air compressor work and why is it needed?
A marine air compressor squeezes air in stages to high pressure and stores it in receivers, chiefly to provide the starting air that turns large diesel engines over.
Marine MachineryWhy won't my marine air compressor build pressure?
A first-principles check for a compressor that runs but won't build pressure — valves, unloader, leaks, rings and cooling.
Marine MachineryWhy won't the main engine start on air?
A main engine that turns on air but will not fire, or will not turn at all, points to a short list of common causes across the starting-air, fuel and control systems.
Marine MachineryWhat causes a scavenge fire in a two-stroke marine engine?
A scavenge fire is the ignition of accumulated oil and carbon in the scavenge spaces of a two-stroke engine — here is why it happens and how to respond.
Merchant Navy CareersHow do you become a marine engineer on ships?
Becoming a marine engineer means entering the engine department through a cadetship or engineering degree and progressing by sea time and Certificates of Competency.
Marine MachineryWhy is the main engine lubricating oil pressure low?
Low lubricating oil pressure is a serious alarm that threatens the bearings — the cause is usually in the pump, the filters, the oil itself, or a leak.
Marine MachineryHow does a marine centrifugal pump work?
A centrifugal pump moves liquid by spinning it with an impeller, which throws the liquid outward and converts its speed into pressure — the most common type of pump aboard ship.
