Escort vessel
An escort vessel was a starship whose primary purpose was to accompany and protect other vessels.

In 2154, two Xindi-Reptilian warships escorted Degra's ship during initial testing of the Xindi test weapon in the Calindra system. ()

In the 2260s of the alternate reality, information on escort vessels was located in the Federation database. ()

In 2367, a radical faction based on the Beta moon of Peliar Zel sent a ship claiming to be an escort vessel to intercept the Federation shuttlecraft . ()

The  Federation starship, originally developed to counter the Borg, was officially classified as an escort vessel, but was unofficially a warship. ()

In 2372, during the Klingon-Cardassian War, Starfleet provided escorts for Cardassian convoys carrying humanitarian relief supplies. ()

In an alternate timeline, Admiral William T. Riker berated Worf for allowing the  to enter the former Romulan Neutral Zone without an escort. ()

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Spacecraft classifications
Spacecraft classifications (alternate reality)