 The ship first appeared in the pilot of Star Trek : Enterprise , " Broken Bow " . The episode showed the maiden voyage of Enterprise , with the crew returning a Klingon named Klang ( Tom Lister , Jr . ) to his homeworld , Qo 'noS . Following that success , the ship and crew are ordered to begin a deep space exploration mission . At launch , the vessel was limited to a maximum speed of warp 5 and was equipped with an experimental transporter . The ship was launched three weeks ahead of schedule on April 16 , <unk> , and several of its weapon systems were not yet online but it was equipped with polarized hull plating as a defensive measure . It was not until the following month while in combat with an unknown foe that its spatial torpedoes were calibrated ; and the phase cannons were installed in the following September . 
