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What is The Fishing Vessel Gearbox?

What is The Fishing Vessel Gearbox?

Fishing Vessel Gearboxes are essential components of the propulsion system in vessels, transmitting power from diesel engines directly to propellers via gear ratios and clutching mechanisms. In addition, this gearbox also performs other important functions such as reversing, clutching and bearing thrust. They're used on passenger ships, cargo ships, engineering vessels, fishing boats, oil drilling platforms, navy and police patrol boats and many other applications.

A gearbox consists of a housing, shaft, clutch and gear mechanism. The housing contains the reduction gear which reduces engine speed to propeller rotation speed; connected via shaft to clutch (mechanically operated claw clutch). Finally, there is also a control mechanism consisting of levers or cables enabling operators to manipulate gear ratio based on boat's speed and load requirements.

Marine gearboxes come in all shapes and sizes, from simple high-performance gears to complex marine gears designed to withstand external forces like vibrational shocks or sudden transient forces. In order to prevent failure and ensure long-term functionality of gearboxes.

Marine gears must also withstand corrosion and saltwater exposure, along with other potential environmental threats like abrasion, erosion and high temperatures. A properly functioning lubrication system for marine gearboxes is crucial in order to maximize performance and prolong equipment lifespan.

CJC(r) Oil Filter solutions can be an invaluable way to ensure marine gearboxes run smoothly, helping keep oil clean and free from oxidation residues that reduce its lifetime significantly. In addition, these filters reduce costs through reduced maintenance requirements and unplanned yard stays, significantly increasing serviceability.

Wartsila 2-speed marine gearbox provides a cost-cutting solution for vessels operating with multiple operational modes or at reduced transit speeds, by operating their propeller at lower speed when maximum vessel or propulsor thrust is no longer necessary - estimated savings up to eight percent in fuel consumption and reduction of nitrogen oxide (NOx) and sulphur dioxide (SOx) exhaust emissions are possible as a result.

Not only will a gearbox help to lower fuel consumption, it will also lower noise emissions from inside and underwater vessels, creating greater comfort for passengers, crew members, marine life, and improving navigational safety - especially important in heavily-populated marine habitats such as coral reefs.


YL500 dual output fishing boat gearbox