10/30/2026
A major milestone for the submarine fleet. Fairbanks Morse Defense and Hunt Valve Company, Inc. are shipping the first-ever additively manufactured SUBSAFE Level I component: a copper-nickel 2" angled tailpiece built in collaboration with Lincoln Electric Additive Solutions.
SUBSAFE and Level I are among the Navy's most demanding standards, because the parts they govern help bring every submarine home. With the new Navy AM standards, this tailpiece met full Government Contract Quality Assurance (GCQA) compliance from start to finish. Its qualification is backed by underwater explosion shock (UNDEX) testing of a separate additively manufactured tailpiece.
By replacing traditional casting with additive manufacturing, we can cut lead times on critical components, keep maintenance schedules on track, and strengthen the defense industrial base.
We're proud of the engineers, quality professionals, and production teams who made this possible, and grateful to our partners at Lincoln Electric Additive Solutions.