General Dynamics NASSCO-Mayport filed a Worker Adjustment and Retraining Notification Notice with the state Friday that it might lay off 65 manufacturing jobs April 29.
Its website, nassco.com, says NASSCO-Mayport's modern shop facilities were designed specifically to support Navy ship repair.
A NASSCO-Mayport representative could not comment.
The website says the 2-acre operation sits adjacent to the maintenance piers on Naval Station Mayport.
The "compound houses a fully equipped machine shop, structural shop, electrical clean room, sheet metal shop and pipe shop," it says.
It says a fully equipped 30,000-square-foot production building is 500 yards from the piers. There also is an environmentally compliant blast and paint booth, as well as mobile, containerized tool rooms and shop facilities that can be transported to the job site.
NASSCO-Mayport also has a long-term lease on a 10,000-square-foot warehouse and 2 more acres outside the station's main gate.
The notice says the operation's address is 2999 Old Mayport Road.
NASSCO-Mayport's layoff notice follows two other notices related to defense work.
BAE Systems Southeast Shipyards Mayport LLC filed a Tuesday notice that it might lay off 100 employees starting April 1 and CTI Resource Management Services Inc. laid off 34 employees last week in Florida because of sequestration, the $85 billion in automatic federal budget cuts that took effect Friday.
CTI Resource Management Services founder and President Chris Imbach said the March 27 deadline for the federal budget continuing resolution is another factor.
The federal government's fiscal year starts Oct. 1, but Congress has been operating on continuing resolutions to remain operating. The current budget resolution expires March 27.
CTI Resource Management Services filed its notice Feb. 21 that its layoff date was March 1. Imbach said Feb. 28 was the employees' last day.
Another factor in the Mayport layoffs could be the slowdown in ship-repair work because of fewer ships at Naval Station Mayport.
Daily Record news partner WJXT Channel 4 reported the Navy's Fleet Readiness Command reaffirmed Thursday it wants up to 14 littoral combat ships to be based at Mayport by 2020.
The move would bring 21 crews totaling about 3,600 sailors and family members to either Mayport or Norfolk, Va.
The Navy's plan to make Mayport the East Coast base for the fleet was first announced in 2010 by then-Chief of Naval Operations Adm. Gary Roughead, who said the ships would start arriving in 2016, reported WJXT.
Naval Station Mayport has been shrinking since losing its last aircraft carrier, the USS John F. Kennedy, in 2007. The number of frigates stationed there has dwindled, reported WJXT.
An amphibious ready group is scheduled to move there in fiscal 2014, but that could be delayed by coming budget cuts.
Current plans also call for the base to be upgraded to house a nuclear aircraft carrier by 2020, but that could also be threatened or delayed by budget constraints or political influence from lawmakers in Virginia, who want to keep all East Coast carriers based in Norfolk, reported WJXT.