The first U.S. Navy warfighting vessels to be armed with hypersonic missiles will be the stealth Zumwalt-class destroyers, the service’s top admiral said, according to USNI News.

While the Navy was expected to field hypersonic weaponry on its cruise-missile submarines first, Chief of Naval Operations Adm. Mike Gilday said at a Center for Strategic and Budgetary Assessments event Tuesday that the service intended to start with the Zumwalts.

“Our biggest R&D effort is in hypersonics — to deliver that capability in 2025 on a surface ship and then on Block V [Virginia-class] submarines,” Gilday said, adding that fielding hypersonic weaponry aboard the Zumwalt-class destroyers would be an “important move” toward turning these ships into strike platforms.

The Zumwalt-class destroyers were designed to fight in littoral waters, carrying out land-attack and naval-fire support missions. Their primary weapon was to be the Advanced Gun System, consisting of a pair of 155 mm guns.