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 "Rudder"
How does a ship's steering gear work?
The steering gear is the powered hydraulic machinery that turns the rudder in response to helm orders from the bridge, using rams or rotary vanes driven by pumps.
Maritime GlossaryWhat is ballast water and why is it managed?
What ballast water is, why ships carry it, and why it is now exchanged or treated under the Ballast Water Management Convention.
Marine MachineryWhat is the emergency procedure if the steering gear fails?
Steering gear failure is a serious emergency handled by switching to the standby power unit or emergency steering and warning other ships, backed by SOLAS redundancy.
Marine MachineryWhat is the difference between a controllable-pitch and a fixed-pitch propeller?
A fixed-pitch propeller has blades set at one permanent angle, while a controllable-pitch propeller can rotate its blades to vary thrust and go astern without reversing the engine.
