Solar barge

Solar barges are starships from the Armada portion of the Unicron Trilogy continuity family.

A solar barge can either be towed by a smaller ship or extend "solar sails" to move under its own power. Like ordinary barges, they're used for transporting cargo, such as prisoners.

Fiction

Panini Armada comics

When Megatron got word that several Mini-Cons were surrendering themselves to the Decepticons, he sent Cyclonus to pick them up in a solar barge. Cyclonus took the barge to Earth, stuffed the Mini-Cons inside it and began towing it back to the Decepticon base on the Moon. Earthshaker! However, the Mini-Cons had only pretender to surrender, and soon broke out of their cells and cut the cable between the solar barge and Cyclonus. They then activated the ship's sails and used it to return to Earth. Lost in Space!