The Wyvern-class (commonly called the "Hopper") was a type of Federation planetary troop transport that entered service in 2363. (LUG RPG: The Dominion War Sourcebook: The Fires of Armageddon) The Wyvern came in several variants, the standard version was built to carry around 30 troops from orbit to the surface and from various locations on the ground. Other variants existed that were larger and could carry more personnel and even ground vehicles. The Wyvern lacked a warp drive and needed to be ferried from system to system by a warp capable vessel.