Submarine maker Electric Boat will lay off 65 workers from the Groton facility in October.
This is the second layoff notice since July, when the company said it plans to lay off 104 employees due to a projected softening of the workload for carpenters, machinists and pipefitters.
A spokesman for the Groton-based company did not immediately return a call the Associated Press left seeking more information.
In July, Electric Boat informed the Connecticut Department of Labor of its layoff plans. The new round of layoffs will happen on Oct. 7.
Electric Boat, which is the U.S. Navy's primary contractor for submarines, said in early July it's hiring hundreds of employees and putting up buildings as it increases production of fast-attack submarines and ramps up design work for ballistic missile vessels.
The company employs more than 10,000 workers at Groton and a Quonset Point, R.I., manufacturing plant.
