Soon after the Graffler freighter was introduced into the Romulan fleet many of the ships began to be converted into makeshift patrol craft to help patrol the ever-expanding borders. The ships were equipped with better weapons, at the expense of an overtaxed reactor. The Galamthri Patrol Cruisers proved to be ineffectual at best but were so cheap that the Romulans maintained a steady flow of the craft to the outer sectors.
Once newer patrol craft were introduced in the 2240’s and 50’s the Galamthri fleet was stripped and sold off to civilian interests for use as tug boats or simple scrap depending on the veracity and interest of the dealer purchasing the hull.