Sikorsky, a unit of Lockheed Martin (LMT.N), said on Thursday it was awarded a $2.7 billion contract by the US Navy to build 35 additional CH-53K helicopters.

The CH-53K has three times the carrying power of its predecessor and made its international debut at the Berlin Air Show in 2018.

The agreement includes 12 US Marine Corps Lot 7 aircraft, 15 US Marine Corps Lot 8 aircraft, and eight aircraft for Israel.

“This contract award for 35 CH-53K helicopters stabilizes Sikorsky’s nationwide supply base, and creates additional production efficiencies,” said Sikorsky’s president Paul Lemmo.

Sikorsky said it will begin delivery of these aircraft in 2026.