Hull Outfittings
Apu Block
A rudder trunk bearing block that supports the rudder stock and permits it to rotate under load.
Hull Outfittings
Rudder Stock
The vertical shaft that transmits steering torque from the steering gear down to the rudder blade.
Overview
The rudder stock is the shaft that connects the steering gear above to the rudder blade below, running through the rudder trunk and its bearings. Turning the stock is what turns the blade; every other rudder component exists to support, seal or guide this one shaft. It is sized for torque, not just bending load, since steering gear applies a twisting force the full length of the stock whenever the helm moves. Its keyway or coupling to the steering gear quadrant is a fatigue-critical detail checked at survey.
Specifications on request
Full specifications, material grades and dimensions are confirmed per enquiry. Tell us the vessel and the duty, and we will send the datasheet.
View datasheet—
Related equipment
Other equipment filed under the same part of the catalogue.
Hull Outfittings
Hybrid Vortex Reducing Fin
A hull appendage that breaks up hull-generated wake vortices ahead of the propeller to recover propulsive efficiency.
Hull Outfittings
Rudder Blade
The flat, streamlined surface that deflects water flow to steer a vessel, mounted on the rudder stock.
Hull Outfittings
Rudder Horn
A fixed hull structure that carries the lower rudder bearing on a semi-spade or horn-type rudder arrangement.