Luther's Welding & Fabrications

Custom Rudder Skeleton for the Yacht Industry

Custom Rudder Skeleton for the Yacht Industry
Custom Rudder Skeleton for the Yacht Industry

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Guiding a 28' day sailing yacht with a 5700 lb. displacement requires a strong, precise rudder. That's why Alerion Yachts trusted Luther's Welding & Fabrications to construct the rudder skeleton for their Model AE 28 rudder shaft.

This project is a great example of our diverse manufacturing capabilities in the marine industry. To set up the 4 skeletons required for the order, design and assembly drawings were first completed in SolidWorks. The material required was type T304 stainless steel tubes that were 2.25" x .25" and (3x) .5" x .065", with an overall part length of 38".

Manufacturing began with preparing the tubes using various machining processes including a band saw to cut the tubes to size (15.75", 13.75" and 12.25") and a precision CNC lathe to turn down the tubes to a diameter of 2.170". Features and holes were predrilled and machined prior to using a tube bender to bend an 11° angle over 14" length. Our experienced TIG welders then fabricated the skeleton to tolerances of ±.003"

At Luther's Welding & Fabrications, we have a reputation for quality, workmanship and customer service that is known throughout the marine industry. We deliver products that meet guidelines and standards for European CE, NMMA and ABS Welding certifications. Our staff consists of marine engineers, welders, machinists and fabricators with over 20 years experience in the industry.

To learn more about this project, or about our other capabilities and services, see the table below or contact us directly.

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Custom Rudder Skeleton Highlights

Product Description
Alerion Express 28 Rudder Shaft
Capabilities Applied/Processes
  • CAD Design (SolidWorks)
  • Band Saw Cut
  • Machined
  • Drilled
  • Tube Bender
  • Tig Welded
Equipment Used to Manufacture Part
CNC Machine
Overall Part Dimensions
Diameter: 2.170"
Length: 38"
Bend: 11°
Bar Bent: 14"
3 tubes
  • 15 3/4"
  • 13 ¾"
  • 12 1/4"
Tightest Tolerances
Material Used
2-1/4" X ¼" Tube Stainless Steel T304
(3X) ½’ X .065 Tube Stainless Steel T304
Industry for Use
Delivery Location
U.S.  Watercraft
Standards Met
Customer Specifications
2D CAD Drawing
NMMA for Marine Tank Fabrications
CE for European Marine Tank Fabrications
ABS Welding Certifications

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